http://www.portrait-artist.org/ has a bunch of stuff. At least, I assume it does. I bookmarked it years ago, when I was planning on learning to draw better, and just sort of never got around to it...
Still, I assume I didn't bookmark it for no reason. Check it out.
Follow your passion. Stay true to yourself. Never follow someone else's path unless you're in the woods and you're lost and you see a path. By all means, you should follow that. — Ellen DeGeneres