Some of the best things are free.
Here is a small collection of handouts, documents and compositions. If you use them, please give credit where credit is due. If you perform any of the music, please let me know (and I'd love a recording)!
This is the "second syllabus" that I've developed over the last few years teaching at Lakeland Community College. I make regular revisions and include it in my course packets for Music Appreciation and Popular Music. It contains the "how" and "why" of the work that students will be doing, while the official syllabus sticks to the "what" of the course. I think it is something, that if students hold onto it, could be useful in other classes. Since I get many students who are in college for the first time during the semester I see them, there are things that fall into "how to be a college student" that just don't belong in the specific syllabus for a course, but need to be put out there.