I want to continue building my social collaborative flashcard platform. I spent my entire summer building out the basic functionality and very low level sharing

I want to continue building my social collaborative flashcard platform. I spent my entire summer building out the basic functionality and very low level sharing capabilities. I still dream of a platform where whenever I want to pick up a new subject/book/idea/ideology/[thing] I can search for a flashcard deck where I can continuously learn and add new flashcards for other people to use.