Don’t take notes by laptop
Research shows you only remember 5% of what you hear in a lecture, about 10% of what you read, but about 75% of what you learn when you practice what you’ve learned and 90% of what you learned about when you immediately go over it and tell somebody else about it. Writing is a kind of telling. Research also shows that when you know you are going to write down what you learned about, your brain starts working ahead of time sorting the information and picking out the most important details. Other research shows that students who write out their notes by hand and then have a chance to go over those notes at least once, remembered more and had a deeper understanding of the material than students who took notes with a laptop.
(the study with the 10% of what you read, etc, was a lifehack article, and probably a little shakier in terms of firm research than the one linked above).