If you like homespuntapes, you'll also find Stephan Grossman's lessons similarly helpful.

I'm a bit prejudiced in Stephan's favor because I learned most of my technique from his books, way back in the 60s before the advent of audio tapes, then videotapes, and now DVDs. I've seen a few of his latter-day lessons on DVD, and am impressed. (I was able to learn things from his more advanced lessons, on ragtime/bles picking, that were too hard for me to "get" from the books.)

Grossman's company offers lessons from other people as well as SG himself, including the late great Dave Van Ronk.