The other answers are great. I'll just add this quixotic little resource I've recently gotten into that explores yoga with a focus on modern anatomical knowledg

The other answers are great. I'll just add this quixotic little resource I've recently gotten into that explores yoga with a focus on modern anatomical knowledge. http://www.bandhayoga.com http://www.bandhayoga.com It's not specifically what you asked for, but as I've been learning about mobility work, I've found that the illustrations they use in their free book are especially helpful for learning to identify specific muscles and can help you narrow in on your problem areas in conjunction with other programs.