Here's a great Hatha Yoga article by Alan Nash that I found. Like Yogani, he's good at organizing his thoughts. Covered topics: asanas, pranayama, kechari, cleansing, practice stages, book recommendations.
I ordered the basic yoga book recommended: Yoga Self Taught by Lysebeth, but not the advanced book by Theos Bernard Hatha Yoga and Bernard's autobiographical Heaven Lies Within Us both available on abebooks.com if anyone is interested. I'd love a book report on the latter two if anyone orders them. I'll do the book report on Yoga Self Taught.