Try recalling before rereading
Turn a blank page into a useful study tool.

The idea
After learning a topic, put your notes away and try to explain it from memory. Retrieval practice is the effort to bring information back, rather than simply recognizing familiar words on a page. The Learning Scientists describe it as a way to strengthen later access to what you have learned.
Try it in your routine
Try this with one small topic. Write three questions, close the book, and answer them in your own words. Compare your answers with the course material and mark missing or incorrect ideas. Return to those questions in a later session. This routine is an example to adapt, not a promise of a particular grade.
Choose your tools
A plain notebook or a few index cards are enough. An app can help organize questions, but its design should make it easy to attempt an answer before revealing it. Avoid spending the whole session decorating cards: the useful part is answering, checking and trying again.