diff --git a/002_source/cms/src/app/dashboard/lesson_types/page.tsx b/002_source/cms/src/app/dashboard/lesson_types/page.tsx
index 262a7c2..8ae82b5 100644
--- a/002_source/cms/src/app/dashboard/lesson_types/page.tsx
+++ b/002_source/cms/src/app/dashboard/lesson_types/page.tsx
@@ -1,3 +1,5 @@
+'use client';
+
 import * as React from 'react';
 import { useRouter } from 'next/navigation';
 import { LoadingButton } from '@mui/lab';
@@ -12,6 +14,10 @@ import { useTranslation } from 'react-i18next';
 import { paths } from '@/paths';
 import { logger } from '@/lib/default-logger';
 import { toast } from '@/components/core/toaster';
+import type { LessonType } from '@/components/dashboard/lesson_type/ILessonType';
+
+import type { Filters } from '@/components/dashboard/lesson_type/lesson-types-filters';
+
 
 interface PageProps {
   searchParams: {
@@ -27,7 +33,22 @@ interface PageProps {
 }
 
 export default function Page({ searchParams }: PageProps): React.JSX.Element {
+  const { t } = useTranslation();
   const { email, phone, sortDir, status, name, visible, type } = searchParams;
+  const router = useRouter();
+
+  const [isLoadingAddPage, setIsLoadingAddPage] = React.useState<boolean>(false);
+  const [lessonTypesData, setLessonTypesData] = React.useState<LessonType[]>([]);
+  const sortedLessonTypes = applySort(lessonTypesData, sortDir);
+  const filteredLessonTypes = applyFilters(sortedLessonTypes, {
+    email,
+    phone,
+    status,
+    name,
+    type,
+    visible,
+    //
+  });
 
   return (
     <Box
@@ -38,7 +59,75 @@ export default function Page({ searchParams }: PageProps): React.JSX.Element {
         width: 'var(--Content-width)',
       }}
     >
-      hello lesson_type
+      <Stack spacing={4}>
+        <Stack direction={{ xs: 'column', sm: 'row' }} spacing={3} sx={{ alignItems: 'flex-start' }}>
+          <Box sx={{ flex: '1 1 auto' }}>
+            <Typography variant="h4">{t('Lesson Types')}</Typography>
+          </Box>
+          <Box sx={{ display: 'flex', justifyContent: 'flex-end' }}>
+            <LoadingButton
+              loading={isLoadingAddPage}
+              onClick={(): void => {
+                setIsLoadingAddPage(true);
+                router.push(paths.dashboard.lesson_types.create);
+              }}
+              startIcon={<PlusIcon />}
+              variant="contained"
+            >
+              {/* add new lesson type */}
+              {t('dashboard.lessonTypes.add')}
+            </LoadingButton>
+          </Box>
+        </Stack>
+      </Stack>
     </Box>
   );
 }
+
+// Sorting and filtering has to be done on the server.
+
+function applySort(row: LessonType[], sortDir: 'asc' | 'desc' | undefined): LessonType[] {
+  return row.sort((a, b) => {
+    if (sortDir === 'asc') {
+      return a.createdAt.getTime() - b.createdAt.getTime();
+    }
+
+    return b.createdAt.getTime() - a.createdAt.getTime();
+  });
+}
+
+function applyFilters(row: LessonType[], { email, phone, status, name, visible }: Filters): LessonType[] {
+  return row.filter((item) => {
+    if (email) {
+      if (!item.email?.toLowerCase().includes(email.toLowerCase())) {
+        return false;
+      }
+    }
+
+    if (phone) {
+      if (!item.phone?.toLowerCase().includes(phone.toLowerCase())) {
+        return false;
+      }
+    }
+
+    if (status) {
+      if (item.status !== status) {
+        return false;
+      }
+    }
+
+    if (name) {
+      if (!item.name?.toLowerCase().includes(name.toLowerCase())) {
+        return false;
+      }
+    }
+
+    if (visible) {
+      if (!item.visible?.toLowerCase().includes(visible.toLowerCase())) {
+        return false;
+      }
+    }
+
+    return true;
+  });
+}
diff --git a/002_source/cms/src/components/dashboard/lesson_category/helloworld.tsx b/002_source/cms/src/components/dashboard/lesson_category/helloworld.tsx
deleted file mode 100644
index 3989cb1..0000000
--- a/002_source/cms/src/components/dashboard/lesson_category/helloworld.tsx
+++ /dev/null
@@ -1,3 +0,0 @@
-const helloworld = 'helloworld';
-
-export { helloworld };
diff --git a/002_source/cms/src/components/dashboard/lesson_type/ILessonType.tsx b/002_source/cms/src/components/dashboard/lesson_type/ILessonType.tsx
new file mode 100644
index 0000000..65a4930
--- /dev/null
+++ b/002_source/cms/src/components/dashboard/lesson_type/ILessonType.tsx
@@ -0,0 +1,57 @@
+'use client';
+
+import { dayjs } from '@/lib/dayjs';
+
+export interface LessonType {
+  id: string;
+  name: string;
+  type: string;
+  pos: number;
+  visible: 'visible' | 'hidden';
+  createdAt: Date;
+  //
+  // original
+  // id: string;
+  // name: string;
+  //
+  avatar?: string;
+  email: string;
+  phone?: string;
+  quota: number;
+  status: 'pending' | 'active' | 'blocked';
+  // createdAt: Date;
+}
+
+export const LessonTypeDefaultValue: LessonType = {
+  id: 'string',
+  name: 'string',
+  type: 'string',
+  pos: 1,
+  visible: 'visible',
+  createdAt: dayjs().toDate(),
+  //
+  // original
+  // id: 'string',
+  // name: 'string',
+  //
+  avatar: 'string',
+  email: 'string',
+  phone: 'string',
+  quota: 1,
+  status: 'pending',
+  // createdAt: Date;
+};
+
+export interface DBLessonType {
+  id: string;
+  name: string;
+  type: string;
+  pos: number;
+  visible: 'visible' | 'hidden';
+  createdAt: Date;
+  created: 'string';
+}
+
+export interface Helloworld {
+  id: string;
+}
diff --git a/002_source/cms/src/components/dashboard/lesson_type/helloworld.tsx b/002_source/cms/src/components/dashboard/lesson_type/helloworld.tsx
deleted file mode 100644
index 3989cb1..0000000
--- a/002_source/cms/src/components/dashboard/lesson_type/helloworld.tsx
+++ /dev/null
@@ -1,3 +0,0 @@
-const helloworld = 'helloworld';
-
-export { helloworld };
diff --git a/002_source/cms/src/components/dashboard/lesson_type/lesson-types-filters.tsx b/002_source/cms/src/components/dashboard/lesson_type/lesson-types-filters.tsx
new file mode 100644
index 0000000..abb6f42
--- /dev/null
+++ b/002_source/cms/src/components/dashboard/lesson_type/lesson-types-filters.tsx
@@ -0,0 +1,403 @@
+'use client';
+
+import * as React from 'react';
+import { useRouter } from 'next/navigation';
+import Button from '@mui/material/Button';
+import Chip from '@mui/material/Chip';
+import Divider from '@mui/material/Divider';
+import FormControl from '@mui/material/FormControl';
+import OutlinedInput from '@mui/material/OutlinedInput';
+import Select from '@mui/material/Select';
+import type { SelectChangeEvent } from '@mui/material/Select';
+import Stack from '@mui/material/Stack';
+import Tab from '@mui/material/Tab';
+import Tabs from '@mui/material/Tabs';
+import Typography from '@mui/material/Typography';
+import { useTranslation } from 'react-i18next';
+
+import { paths } from '@/paths';
+import { FilterButton, FilterPopover, useFilterContext } from '@/components/core/filter-button';
+import { Option } from '@/components/core/option';
+
+import { LessonType } from './ILessonType';
+import { useLessonTypesSelection } from './lesson-types-selection-context';
+
+export interface Filters {
+  email?: string;
+  phone?: string;
+  status?: string;
+  name?: string;
+  visible?: string;
+  type?: string;
+}
+
+export type SortDir = 'asc' | 'desc';
+
+export interface LessonTypesFiltersProps {
+  filters?: Filters;
+  sortDir?: SortDir;
+  fullData: LessonType[];
+}
+
+export function LessonTypesFilters({
+  filters = {},
+  sortDir = 'desc',
+  fullData,
+}: LessonTypesFiltersProps): React.JSX.Element {
+  const { t } = useTranslation();
+  const { email, phone, status, name, visible, type } = filters;
+
+  const router = useRouter();
+
+  const selection = useLessonTypesSelection();
+
+  function getVisible(): number {
+    return fullData.reduce((count, item: LessonType) => {
+      return item.visible === 'visible' ? count + 1 : count;
+    }, 0);
+  }
+
+  function getHidden(): number {
+    return fullData.reduce((count, item: LessonType) => {
+      return item.visible === 'hidden' ? count + 1 : count;
+    }, 0);
+  }
+
+  // The tabs should be generated using API data.
+  const tabs = [
+    { label: 'All', value: '', count: fullData.length },
+    // { label: 'Active', value: 'active', count: 3 },
+    // { label: 'Pending', value: 'pending', count: 1 },
+    // { label: 'Blocked', value: 'blocked', count: 1 },
+    { label: t('visible'), value: 'visible', count: getVisible() },
+    { label: t('hidden'), value: 'hidden', count: getHidden() },
+  ] as const;
+
+  const updateSearchParams = React.useCallback(
+    (newFilters: Filters, newSortDir: SortDir): void => {
+      const searchParams = new URLSearchParams();
+
+      if (newSortDir === 'asc') {
+        searchParams.set('sortDir', newSortDir);
+      }
+
+      if (newFilters.status) {
+        searchParams.set('status', newFilters.status);
+      }
+
+      if (newFilters.email) {
+        searchParams.set('email', newFilters.email);
+      }
+
+      if (newFilters.phone) {
+        searchParams.set('phone', newFilters.phone);
+      }
+
+      if (newFilters.name) {
+        searchParams.set('name', newFilters.name);
+      }
+
+      if (newFilters.type) {
+        searchParams.set('type', newFilters.type);
+      }
+
+      if (newFilters.visible) {
+        searchParams.set('visible', newFilters.visible);
+      }
+
+      router.push(`${paths.dashboard.lesson_types.list}?${searchParams.toString()}`);
+    },
+    [router]
+  );
+
+  const handleClearFilters = React.useCallback(() => {
+    updateSearchParams({}, sortDir);
+  }, [updateSearchParams, sortDir]);
+
+  const handleStatusChange = React.useCallback(
+    (_: React.SyntheticEvent, value: string) => {
+      updateSearchParams({ ...filters, status: value }, sortDir);
+    },
+    [updateSearchParams, filters, sortDir]
+  );
+
+  const handleVisibleChange = React.useCallback(
+    (_: React.SyntheticEvent, value: string) => {
+      updateSearchParams({ ...filters, visible: value }, sortDir);
+    },
+    [updateSearchParams, filters, sortDir]
+  );
+
+  const handleNameChange = React.useCallback(
+    (value?: string) => {
+      updateSearchParams({ ...filters, name: value }, sortDir);
+    },
+    [updateSearchParams, filters, sortDir]
+  );
+
+  const handleTypeChange = React.useCallback(
+    (value?: string) => {
+      updateSearchParams({ ...filters, type: value }, sortDir);
+    },
+    [updateSearchParams, filters, sortDir]
+  );
+
+  const handleEmailChange = React.useCallback(
+    (value?: string) => {
+      updateSearchParams({ ...filters, email: value }, sortDir);
+    },
+    [updateSearchParams, filters, sortDir]
+  );
+
+  const handlePhoneChange = React.useCallback(
+    (value?: string) => {
+      updateSearchParams({ ...filters, phone: value }, sortDir);
+    },
+    [updateSearchParams, filters, sortDir]
+  );
+
+  const handleSortChange = React.useCallback(
+    (event: SelectChangeEvent) => {
+      updateSearchParams(filters, event.target.value as SortDir);
+    },
+    [updateSearchParams, filters]
+  );
+
+  const hasFilters = status || email || phone || visible || name || type;
+
+  return (
+    <div>
+      <Tabs onChange={handleVisibleChange} sx={{ px: 3 }} value={visible ?? ''} variant="scrollable">
+        {tabs.map((tab) => (
+          <Tab
+            icon={<Chip label={tab.count} size="small" variant="soft" />}
+            iconPosition="end"
+            key={tab.value}
+            label={tab.label}
+            sx={{ minHeight: 'auto' }}
+            tabIndex={0}
+            value={tab.value}
+          />
+        ))}
+      </Tabs>
+      <Divider />
+      <Stack direction="row" spacing={2} sx={{ alignItems: 'center', flexWrap: 'wrap', px: 3, py: 2 }}>
+        <Stack direction="row" spacing={2} sx={{ alignItems: 'center', flex: '1 1 auto', flexWrap: 'wrap' }}>
+          <FilterButton
+            displayValue={name}
+            label={t('Name')}
+            onFilterApply={(value) => {
+              handleNameChange(value as string);
+            }}
+            onFilterDelete={() => {
+              handleNameChange();
+            }}
+            popover={<NameFilterPopover />}
+            value={name}
+          />
+
+          <FilterButton
+            displayValue={type}
+            label={t('Type')}
+            onFilterApply={(value) => {
+              handleTypeChange(value as string);
+            }}
+            onFilterDelete={() => {
+              handleTypeChange();
+            }}
+            popover={<TypeFilterPopover />}
+            value={type}
+          />
+
+          {/*
+          <FilterButton
+            displayValue={email}
+            label="Email"
+            onFilterApply={(value) => {
+              handleEmailChange(value as string);
+            }}
+            onFilterDelete={() => {
+              handleEmailChange();
+            }}
+            popover={<EmailFilterPopover />}
+            value={email}
+          />
+          */}
+
+          {/*
+          <FilterButton
+            displayValue={phone}
+            label="Phone number"
+            onFilterApply={(value) => {
+              handlePhoneChange(value as string);
+            }}
+            onFilterDelete={() => {
+              handlePhoneChange();
+            }}
+            popover={<PhoneFilterPopover />}
+            value={phone}
+          />
+          */}
+
+          {hasFilters ? <Button onClick={handleClearFilters}>{t('Clear filters')}</Button> : null}
+        </Stack>
+        {selection.selectedAny ? (
+          <Stack direction="row" spacing={2} sx={{ alignItems: 'center' }}>
+            <Typography color="text.secondary" variant="body2">
+              {selection.selected.size} {t('selected')}
+            </Typography>
+            <Button color="error" variant="contained">
+              {t('Delete')}
+            </Button>
+          </Stack>
+        ) : null}
+        <Select name="sort" onChange={handleSortChange} sx={{ maxWidth: '100%', width: '120px' }} value={sortDir}>
+          <Option value="desc">{t('Newest')}</Option>
+          <Option value="asc">{t('Oldest')}</Option>
+        </Select>
+      </Stack>
+    </div>
+  );
+}
+
+function TypeFilterPopover(): React.JSX.Element {
+  const { t } = useTranslation();
+  const { anchorEl, onApply, onClose, open, value: initialValue } = useFilterContext();
+  const [value, setValue] = React.useState<string>('');
+
+  React.useEffect(() => {
+    setValue((initialValue as string | undefined) ?? '');
+  }, [initialValue]);
+
+  return (
+    <FilterPopover anchorEl={anchorEl} onClose={onClose} open={open} title={t('Filter by type')}>
+      <FormControl>
+        <OutlinedInput
+          onChange={(event) => {
+            setValue(event.target.value);
+          }}
+          onKeyUp={(event) => {
+            if (event.key === 'Enter') {
+              onApply(value);
+            }
+          }}
+          value={value}
+        />
+      </FormControl>
+      <Button
+        onClick={() => {
+          onApply(value);
+        }}
+        variant="contained"
+      >
+        {t('Apply')}
+      </Button>
+    </FilterPopover>
+  );
+}
+
+function NameFilterPopover(): React.JSX.Element {
+  const { t } = useTranslation();
+  const { anchorEl, onApply, onClose, open, value: initialValue } = useFilterContext();
+  const [value, setValue] = React.useState<string>('');
+
+  React.useEffect(() => {
+    setValue((initialValue as string | undefined) ?? '');
+  }, [initialValue]);
+
+  return (
+    <FilterPopover anchorEl={anchorEl} onClose={onClose} open={open} title={t('Filter by name')}>
+      <FormControl>
+        <OutlinedInput
+          onChange={(event) => {
+            setValue(event.target.value);
+          }}
+          onKeyUp={(event) => {
+            if (event.key === 'Enter') {
+              onApply(value);
+            }
+          }}
+          value={value}
+        />
+      </FormControl>
+      <Button
+        onClick={() => {
+          onApply(value);
+        }}
+        variant="contained"
+      >
+        {t('Apply')}
+      </Button>
+    </FilterPopover>
+  );
+}
+
+function EmailFilterPopover(): React.JSX.Element {
+  const { anchorEl, onApply, onClose, open, value: initialValue } = useFilterContext();
+  const [value, setValue] = React.useState<string>('');
+
+  React.useEffect(() => {
+    setValue((initialValue as string | undefined) ?? '');
+  }, [initialValue]);
+
+  return (
+    <FilterPopover anchorEl={anchorEl} onClose={onClose} open={open} title="Filter by email">
+      <FormControl>
+        <OutlinedInput
+          onChange={(event) => {
+            setValue(event.target.value);
+          }}
+          onKeyUp={(event) => {
+            if (event.key === 'Enter') {
+              onApply(value);
+            }
+          }}
+          value={value}
+        />
+      </FormControl>
+      <Button
+        onClick={() => {
+          onApply(value);
+        }}
+        variant="contained"
+      >
+        Apply
+      </Button>
+    </FilterPopover>
+  );
+}
+
+function PhoneFilterPopover(): React.JSX.Element {
+  const { anchorEl, onApply, onClose, open, value: initialValue } = useFilterContext();
+  const [value, setValue] = React.useState<string>('');
+
+  React.useEffect(() => {
+    setValue((initialValue as string | undefined) ?? '');
+  }, [initialValue]);
+
+  return (
+    <FilterPopover anchorEl={anchorEl} onClose={onClose} open={open} title="Filter by phone number">
+      <FormControl>
+        <OutlinedInput
+          onChange={(event) => {
+            setValue(event.target.value);
+          }}
+          onKeyUp={(event) => {
+            if (event.key === 'Enter') {
+              onApply(value);
+            }
+          }}
+          value={value}
+        />
+      </FormControl>
+      <Button
+        onClick={() => {
+          onApply(value);
+        }}
+        variant="contained"
+      >
+        Apply
+      </Button>
+    </FilterPopover>
+  );
+}
diff --git a/002_source/cms/src/components/dashboard/lesson_type/lesson-types-selection-context.tsx b/002_source/cms/src/components/dashboard/lesson_type/lesson-types-selection-context.tsx
new file mode 100644
index 0000000..e492466
--- /dev/null
+++ b/002_source/cms/src/components/dashboard/lesson_type/lesson-types-selection-context.tsx
@@ -0,0 +1,45 @@
+'use client';
+
+import * as React from 'react';
+
+import { useSelection } from '@/hooks/use-selection';
+import type { Selection } from '@/hooks/use-selection';
+
+import { LessonType } from './ILessonType';
+
+function noop(): void {
+  return undefined;
+}
+
+export interface LessonTypesSelectionContextValue extends Selection {}
+
+export const LessonTypesSelectionContext = React.createContext<LessonTypesSelectionContextValue>({
+  deselectAll: noop,
+  deselectOne: noop,
+  selectAll: noop,
+  selectOne: noop,
+  selected: new Set(),
+  selectedAny: false,
+  selectedAll: false,
+});
+
+interface LessonTypesSelectionProviderProps {
+  children: React.ReactNode;
+  lessonTypes: LessonType[];
+}
+
+export function LessonTypesSelectionProvider({
+  children,
+  lessonTypes = [],
+}: LessonTypesSelectionProviderProps): React.JSX.Element {
+  const lessonTypeIds = React.useMemo(() => lessonTypes.map((lessonType) => lessonType.id), [lessonTypes]);
+  const selection = useSelection(lessonTypeIds);
+
+  return (
+    <LessonTypesSelectionContext.Provider value={{ ...selection }}>{children}</LessonTypesSelectionContext.Provider>
+  );
+}
+
+export function useLessonTypesSelection(): LessonTypesSelectionContextValue {
+  return React.useContext(LessonTypesSelectionContext);
+}