Doing well in your courses: Andrej's advice for success (2013)

This is excellent advice.

I personally rarely joined group study sessions, but thinking back, I should have joined more of them.

To expand on one of the points listed here: do a first pass through questions before writing a single thing and mark which you feel are easy vs. hard (this evaluation may change once you start working on them!). Your prioritization should be: easier + higher points, easier + lower points, then hard in order of perceived difficulty weighted by points.

Oh, and if your course requires memorizing a set of known formulas, write them down first thing on the very last page :)

I've always studied with peers after classes (I'm a chemistry master) and it was the best way to learn. Discuss different ideas and approaches and understandings was a force multiplier.