Designing a Flash card website that:

User registration/login (auth)

Create flashcards from entered or uploaded text

Organize by subject/topic

Quiz modes: e.g., multiple choice, fill-in-the-blank

Mark flashcards as “difficult”

Progress tracking (e.g., score, correct/wrong answers)

Visually clean and mobile-friendly interface

How would i go about this, How would i start
Please and thank you