Don't make me come to CA and kick you.
Finish this one first. Take notes. If you're not taking notes, you're just reading, not studying. Practice the concepts. If you jump from thing to thing, you're not going to absorb it.
I made copies of pages from
this book for handouts for a study group I conducted/taught last summer. I think the presentation is simple and complete. It covers all the basics in a way that doesn't bog your mind with more information than you can handle. It's also small, so it's to the point.