diff --git a/consts/validation.js b/consts/validation.js
index 8a793840..0acf1c21 100644
--- a/consts/validation.js
+++ b/consts/validation.js
@@ -24,7 +24,8 @@ const enums = {
   OFFER_STATUS_ENUM: ['active', 'draft', 'closed'],
   NOTIFICATION_TYPE_ENUM: ['new', 'requested', 'active', 'declined', 'updated', 'closed', 'deleted'],
   QUESTION_TYPE_ENUM: ['multipleChoice', 'openAnswer', 'oneAnswer'],
-  QUIZ_VIEW_ENUM: ['Stepper', 'Scroll']
+  QUIZ_VIEW_ENUM: ['Stepper', 'Scroll'],
+  RESOURCES_TYPES_ENUM: ['lessons', 'attachments', 'questions', 'quizzes']
 }
 
 module.exports = {
diff --git a/models/attachment.js b/models/attachment.js
index 090c3af8..95d34ef0 100644
--- a/models/attachment.js
+++ b/models/attachment.js
@@ -1,6 +1,14 @@
 const { ATTACHMENT, USER, RESOURCES_CATEGORY } = require('~/consts/models')
 const { Schema, model } = require('mongoose')
-const { FIELD_CANNOT_BE_EMPTY, FIELD_CANNOT_BE_SHORTER, FIELD_CANNOT_BE_LONGER } = require('~/consts/errors')
+const {
+  FIELD_CANNOT_BE_EMPTY,
+  FIELD_CANNOT_BE_SHORTER,
+  FIELD_CANNOT_BE_LONGER,
+  ENUM_CAN_BE_ONE_OF
+} = require('~/consts/errors')
+const {
+  enums: { RESOURCES_TYPES_ENUM }
+} = require('~/consts/validation')
 
 const attachmentSchema = new Schema(
   {
@@ -34,6 +42,14 @@ const attachmentSchema = new Schema(
       type: Schema.Types.ObjectId,
       ref: RESOURCES_CATEGORY,
       default: null
+    },
+    resourceType: {
+      type: String,
+      enum: {
+        values: RESOURCES_TYPES_ENUM,
+        message: ENUM_CAN_BE_ONE_OF('resource type', RESOURCES_TYPES_ENUM)
+      },
+      default: RESOURCES_TYPES_ENUM[1]
     }
   },
   {
diff --git a/models/lesson.js b/models/lesson.js
index 394457e8..a4e2889d 100644
--- a/models/lesson.js
+++ b/models/lesson.js
@@ -1,6 +1,15 @@
 const { Schema, model } = require('mongoose')
-const { FIELD_CANNOT_BE_EMPTY, FIELD_CANNOT_BE_SHORTER, FIELD_CANNOT_BE_LONGER } = require('~/consts/errors')
+const {
+  FIELD_CANNOT_BE_EMPTY,
+  FIELD_CANNOT_BE_SHORTER,
+  FIELD_CANNOT_BE_LONGER,
+  ENUM_CAN_BE_ONE_OF
+} = require('~/consts/errors')
 const { USER, LESSON, ATTACHMENT, RESOURCES_CATEGORY } = require('~/consts/models')
+const {
+  enums: { RESOURCES_TYPES_ENUM }
+} = require('~/consts/validation')
+
 const lessonSchema = new Schema(
   {
     author: {
@@ -36,6 +45,14 @@ const lessonSchema = new Schema(
       type: Schema.Types.ObjectId,
       ref: RESOURCES_CATEGORY,
       default: null
+    },
+    resourceType: {
+      type: String,
+      enum: {
+        values: RESOURCES_TYPES_ENUM,
+        message: ENUM_CAN_BE_ONE_OF('resource type', RESOURCES_TYPES_ENUM)
+      },
+      default: RESOURCES_TYPES_ENUM[0]
     }
   },
   {
diff --git a/models/question.js b/models/question.js
index ed8fe00b..c582531b 100644
--- a/models/question.js
+++ b/models/question.js
@@ -1,6 +1,6 @@
 const { Schema, model } = require('mongoose')
 const {
-  enums: { QUESTION_TYPE_ENUM }
+  enums: { QUESTION_TYPE_ENUM, RESOURCES_TYPES_ENUM }
 } = require('~/consts/validation')
 const { QUESTION, USER, RESOURCES_CATEGORY } = require('~/consts/models')
 const {
@@ -56,6 +56,14 @@ const questionSchema = new Schema(
       type: Schema.Types.ObjectId,
       ref: USER,
       required: [true, FIELD_CANNOT_BE_EMPTY('author')]
+    },
+    resourceType: {
+      type: String,
+      enum: {
+        values: RESOURCES_TYPES_ENUM,
+        message: ENUM_CAN_BE_ONE_OF('resource type', RESOURCES_TYPES_ENUM)
+      },
+      default: RESOURCES_TYPES_ENUM[2]
     }
   },
   { timestamps: true, versionKey: false }
diff --git a/models/quiz.js b/models/quiz.js
index 19b96ba8..d6cf9919 100644
--- a/models/quiz.js
+++ b/models/quiz.js
@@ -1,9 +1,14 @@
 const { Schema, model } = require('mongoose')
 const { QUIZ, USER, RESOURCES_CATEGORY, QUESTION } = require('~/consts/models')
-const { FIELD_CANNOT_BE_EMPTY, FIELD_CANNOT_BE_LONGER, FIELD_CANNOT_BE_SHORTER, ENUM_CAN_BE_ONE_OF } = require('~/consts/errors')
-const { enums: {
-  QUIZ_VIEW_ENUM
-} } = require('~/consts/validation')
+const {
+  FIELD_CANNOT_BE_EMPTY,
+  FIELD_CANNOT_BE_LONGER,
+  FIELD_CANNOT_BE_SHORTER,
+  ENUM_CAN_BE_ONE_OF
+} = require('~/consts/errors')
+const {
+  enums: { QUIZ_VIEW_ENUM, RESOURCES_TYPES_ENUM }
+} = require('~/consts/validation')
 
 const quizSchema = new Schema(
   {
@@ -33,6 +38,14 @@ const quizSchema = new Schema(
       ref: RESOURCES_CATEGORY,
       default: null
     },
+    resourceType: {
+      type: String,
+      enum: {
+        values: RESOURCES_TYPES_ENUM,
+        message: ENUM_CAN_BE_ONE_OF('resource type', RESOURCES_TYPES_ENUM)
+      },
+      default: RESOURCES_TYPES_ENUM[3]
+    },
     settings: {
       view: {
         type: String,
diff --git a/services/course.js b/services/course.js
index d2ddc72c..81535abe 100644
--- a/services/course.js
+++ b/services/course.js
@@ -21,18 +21,18 @@ const courseService = {
   },
 
   getCourseById: async (id) => {
-    return await Course.findById(id).lean().exec()
+    return await Course.findById(id)
+      .populate([
+        { path: 'sections.lessons', select: '_id title resourceType' },
+        { path: 'sections.attachments', select: '_id fileName resourceType' },
+        { path: 'sections.quizzes', select: '_id title resourceType' }
+      ])
+      .lean()
+      .exec()
   },
 
   createCourse: async (author, data) => {
-    const {
-      title,
-      description,
-      category,
-      subject,
-      proficiencyLevel,
-      sections
-    } = data
+    const { title, description, category, subject, proficiencyLevel, sections } = data
 
     return await Course.create({
       title,
@@ -46,7 +46,7 @@ const courseService = {
   },
 
   updateCourse: async (userId, data) => {
-    const { id, title, description, attachments, rewriteAttachments = false } = data
+    const { id, title, description, category, subject, proficiencyLevel, sections } = data
 
     const course = await Course.findById(id).exec()
 
@@ -60,11 +60,7 @@ const courseService = {
       throw createForbiddenError()
     }
 
-    if (attachments) {
-      course.attachments = rewriteAttachments ? attachments : course.attachments.concat(attachments)
-    }
-
-    const updateData = { title, description }
+    const updateData = { title, description, category, subject, proficiencyLevel, sections }
 
     for (const key in updateData) {
       const value = updateData[key]