This site http://http://www.gaiam.com/retail/3...rBeginners/p/0
has lots of videos - and any of them that I have done have been quite good. Yoga Journal has good info on poses, I think, and if you get it, onDemand has some practices in the exercise tv section. I think I've even seen series on pbs and other cable channels from time to time.
I think, and its been several years, I learned originally from the Yoga Journal's Beginner video, which goes over breathing and poses in a progression. I've taken classes in hatha, flow, and kundalini, and now, when I do it, I do ashtanga, so most of my beginner videos are collecting dust. You are welcome to them, if you want to pm me.
Good luck with it! I know I never felt better than when I was doing yoga regularly.