diff --git a/apps/course/serializers/admin.py b/apps/course/serializers/admin.py
index 59d9e37..0352452 100644
--- a/apps/course/serializers/admin.py
+++ b/apps/course/serializers/admin.py
@@ -13,6 +13,22 @@ from apps.course.models import (
 )
 from apps.account.models import ProfessorUser
 
+class AdminLessonSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Lesson
+        fields = '__all__'
+
+class AdminGlossarySerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Glossary
+        fields = '__all__'
+
+class AdminAttachmentSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Attachment
+        fields = '__all__'
+
+
 def serialize_file(value, serializer):
     if not value:
         return None
@@ -21,6 +37,8 @@ def serialize_file(value, serializer):
     return field.to_representation(value)
 
 class AdminCourseCategorySerializer(serializers.ModelSerializer):
+    slug = serializers.SlugField(required=False, allow_blank=True)
+
     class Meta:
         model = CourseCategory
         fields = ['id', 'name', 'slug']
diff --git a/apps/course/urls.py b/apps/course/urls.py
index 0419894..99c917f 100644
--- a/apps/course/urls.py
+++ b/apps/course/urls.py
@@ -6,9 +6,15 @@ from . import views
 router = DefaultRouter()
 router.register(r'admin/courses', views.AdminCourseViewSet, basename='admin-courses')
 router.register(r'admin/chapters', views.AdminChapterViewSet, basename='admin-chapters')
-router.register(r'admin/lessons', views.AdminCourseLessonViewSet, basename='admin-lessons')
-router.register(r'admin/attachments', views.AdminCourseAttachmentViewSet, basename='admin-attachments')
-router.register(r'admin/glossaries', views.AdminCourseGlossaryViewSet, basename='admin-glossaries')
+router.register(r'admin/course-lessons', views.AdminCourseLessonViewSet, basename='admin-course-lessons')
+router.register(r'admin/course-attachments', views.AdminCourseAttachmentViewSet, basename='admin-course-attachments')
+router.register(r'admin/course-glossaries', views.AdminCourseGlossaryViewSet, basename='admin-course-glossaries')
+
+# Base model admin routes for the Repository Page
+router.register(r'admin/categories', views.AdminCourseCategoryViewSet, basename='admin-categories')
+router.register(r'admin/lessons', views.AdminLessonViewSet, basename='admin-lessons-base')
+router.register(r'admin/attachments', views.AdminAttachmentViewSet, basename='admin-attachments-base')
+router.register(r'admin/glossaries', views.AdminGlossaryViewSet, basename='admin-glossaries-base')
 
 urlpatterns = [
     path('', include(router.urls)),
diff --git a/apps/course/views/admin.py b/apps/course/views/admin.py
index c392a71..0544329 100644
--- a/apps/course/views/admin.py
+++ b/apps/course/views/admin.py
@@ -4,18 +4,26 @@ from rest_framework.permissions import IsAuthenticated, IsAdminUser
 from rest_framework.authentication import TokenAuthentication
 from apps.course.models import (
     Course,
+    CourseCategory,
     CourseChapter,
     CourseLesson,
+    Lesson,
     CourseAttachment,
-    CourseGlossary
+    Attachment,
+    CourseGlossary,
+    Glossary
 )
 from apps.course.serializers.admin import (
+    AdminCourseCategorySerializer,
     AdminCourseListSerializer,
     AdminCourseDetailSerializer,
     AdminCourseChapterSerializer,
     AdminCourseLessonSerializer,
     AdminCourseAttachmentSerializer,
-    AdminCourseGlossarySerializer
+    AdminCourseGlossarySerializer,
+    AdminLessonSerializer,
+    AdminGlossarySerializer,
+    AdminAttachmentSerializer
 )
 
 class AdminCourseViewSet(viewsets.ModelViewSet):
@@ -158,3 +166,73 @@ class AdminCourseGlossaryViewSet(viewsets.ModelViewSet):
         instance.delete()
         if glossary:
             glossary.delete()
+
+
+class AdminCourseCategoryViewSet(viewsets.ModelViewSet):
+    """
+    Admin CRUD ViewSet for Course Categories.
+    """
+    permission_classes = [IsAuthenticated, IsAdminUser]
+    authentication_classes = [TokenAuthentication]
+    serializer_class = AdminCourseCategorySerializer
+    
+    def get_queryset(self):
+        queryset = CourseCategory.objects.all().order_by('-id')
+        search = self.request.query_params.get('search', None)
+        if search:
+            queryset = queryset.filter(Q(name__icontains=search) | Q(slug__icontains=search))
+        return queryset
+
+
+class AdminLessonViewSet(viewsets.ModelViewSet):
+    """
+    Admin CRUD ViewSet for base Lesson.
+    """
+    permission_classes = [IsAuthenticated, IsAdminUser]
+    authentication_classes = [TokenAuthentication]
+    serializer_class = AdminLessonSerializer
+    
+    def get_queryset(self):
+        queryset = Lesson.objects.all().order_by('-id')
+        search = self.request.query_params.get('search', None)
+        if search:
+            queryset = queryset.filter(title__icontains=search)
+            
+        content_type = self.request.query_params.get('content_type', None)
+        if content_type:
+            queryset = queryset.filter(content_type=content_type)
+            
+        return queryset
+
+
+class AdminGlossaryViewSet(viewsets.ModelViewSet):
+    """
+    Admin CRUD ViewSet for base Glossary.
+    """
+    permission_classes = [IsAuthenticated, IsAdminUser]
+    authentication_classes = [TokenAuthentication]
+    serializer_class = AdminGlossarySerializer
+    
+    def get_queryset(self):
+        queryset = Glossary.objects.all().order_by('-id')
+        search = self.request.query_params.get('search', None)
+        if search:
+            queryset = queryset.filter(Q(title__icontains=search) | Q(description__icontains=search))
+        return queryset
+
+
+class AdminAttachmentViewSet(viewsets.ModelViewSet):
+    """
+    Admin CRUD ViewSet for base Attachment.
+    """
+    permission_classes = [IsAuthenticated, IsAdminUser]
+    authentication_classes = [TokenAuthentication]
+    serializer_class = AdminAttachmentSerializer
+    
+    def get_queryset(self):
+        queryset = Attachment.objects.all().order_by('-id')
+        search = self.request.query_params.get('search', None)
+        if search:
+            queryset = queryset.filter(title__icontains=search)
+        return queryset
+