Need a simple Q&A based edtech website

Following features are required

For admin
- add objective questions and answers to database
- add subjective questions and answers to database
- add tags to each question which will help filtering
- separation of questions in free and premium types
- 3 types of subscription plan for users

For the users
- signup and login
- browse through free questions and answers
- filter questions through tags
- subscribe through paid plan for full access