If you have an upcoming exam with lot's of theory of concepts you need to remember, I suggest you do flashcards, this is a great way of practicing. It has helped me ace my exams, spending less time studying. https://www.vaia.com/en-us/ This page can help you make flashcards with AI. You just have to give them your study material (PDF) and will do several. On top of that, it can generate tests with the information you've given.