Most students revise by re-reading notes and highlighting. It feels like learning, but it rarely sticks.
Active recall: test yourself
Close your notes and write down everything you remember, then check what you missed. Flashcards and past paper questions work the same way.
Spaced repetition: come back later
Review new material after one day, then three days, then a week. Each time you remember it, it lasts longer.
Put them together
Make flashcards from each topic, test yourself, and sort the cards you got wrong into a pile you review sooner.