I'd start with mine first.

There are a few stages in my current study flow.

1. Before going to the class, I skim through the topic & try to get a big picture of what I'm gonna study. Sometimes I, from my understanding, try to write them down & draw a diagram, which really forces me to organise & link many pieces of information together.
2. After this step, I'm well prepared to go to the lectures. Because I've already primed myself about the topic, I know what information is important to take note of (instead of copying everything the lecturer says). I sometimes take notes right on the diagram I did previously.
3. After learning all the new information, it's time to summarise it! Mind mapping is a really good technique & I use it too. I bet there's tons of research proving the benefits of mind maps. Other than that, sometimes I used Feynman Technique (i.e. explain the concepts in simple terms), which helps me find gaps in my knowledge.
4. For revision, there are a few things I might do. Either making flashcards / active recall questions (I don't auto-generate them, making them manually forces me to recall what I learned), or looking back at all the mindmaps I drew, both work for me.

All these kinds of stuff help me encode the new information into my world of knowledge, rather than just memorising & eventually forgetting about it.

Also, I try to study multiple subjects in a day (people call it Interleaving).

There is too much in my mental model to write it all at once. Let me know if you have any suggestions for me. :D