Anki Flash Cards
Anki is a free flashcard app that uses spaced repetition to help you remember concepts long-term. Download the app, then import these decks to study.
Spaced repetition tools are designed for long-term retention, not cramming. If you get a card correct a couple times, it might not show you again for a week or two. If it is still easy, you might see it a month later. I highly recommend you develop a daily habit of spending a few minutes on Anki daily, with these cards and your own. It will help you remember material long term, and make finals much less stressful.