I've always found a good way to pick text books and other reading material for a specific course is to find the university with the leading department for that subject, then find the syllabus for a class in that course taught there. My experience has been that it's rare to find a top university where you can't find syllabi (if not full course sites with powerpoints and assignments) online with some Google sleuthing.
Back in college, there were a few courses where my own professor's lectures were difficult to follow. I almost always was able to find additional material and often full PowerPoint decks from equivalent courses at other universities to help out.
Back in college, there were a few courses where my own professor's lectures were difficult to follow. I almost always was able to find additional material and often full PowerPoint decks from equivalent courses at other universities to help out.