Usually I shop around and keep several people's notes until I find one that gets the details I think are important. That way the details for rote memory I pick up later and only worry about those that are pertinent to the discussion at hand. To get anything out of a lecture, I need a solid context. I want to know down pat the postulates, the symbol and graphing conventions, the basic framework ahead of time. The best way I learn is to read the relevant material ahead of time.
Homework can be a pitfall.
The trick is getting the solutions in print. Sometimes I would just read my Braille solutions to a grader line for line. Today I would write solutions in print or use Latex to laser print my solutions whenever possible. I have found reviewing my professor's written comments on my written solutions a useful learning tool. What's more, in print is the way all work needs to be done on the job, so sorting this out up front is a big help.