I’ve been doing this one with the calculus in my machine learning class, just going through each part of the equation or code and writing out in words what it does, and it really helps:
Write out everything you know about the subject as if you were teaching it to someone else. Not your smart friend but rather a toddler. This may sound silly, but this part is incredibly important and has worked wonders for me learning new things.
But the tips on how to fucking google shit and actually learn from it are also invaluable. Tumblr users may be surprised to know that you can actually look things up on google, and find information that can contradict the assumptions your own brain has leapt to on its own!