Take the Neti Yoga HomeStudy Course. It will change your life and you'll never be the same person again. Few self-help tapes or books can do the same.
The Fast Track to Enlightenment in this lifetime.
http://community-2.webtv.net/@HH!5C!4E!69DC5B03B16C/yogafarm/NetiYoga/
Release your attachments using the Sedona Method and achieve true freedom. Having desires tends to enslave us.
http://www.sedona.com/
Learn the Secret skills that Masters have taught selected students for Thousands of years.
http://www.higherbalance.com/
Buy 3 CDs for $40 and improve your health and well-being without moving a muscle.
http://www.wishus.org/
Learn the real techniques of advanced forms of yoga not generally accessible to the masses.
http://www.real-yoga.com/
Study under a real high level guru who undestands the needs of western students and will help you to be materially as well as spiritually prosperous.
http://www.vaaaksounds.com/
I'll stop here for now ... Each of these are more than enough for most seekers.