The real thing: a ebook by Swami Shivananda at
http://www.sivanandadlshq.org/download/kundalini.htmor
The very slick 3HO Kundalini Yoga site (Kundalini Yoga as taught by Yogi Bhajan) at
http://www.3ho.org/kundalini-yoga/kundalini-yoga-yb/ Almost every Web link you see in a search of "kundalini yoga" will bring up a Web site for some studio or org that is affiliated with the 3HO folks.
--This is the group I studied with btw (studied and then taught this kind of yoga for about 8 years or soO, but I think other forms of Kundalini yoga are more authentic if not as well-marketed).
This is a link about a set of Tibetan exercises in a nutshell, derived from a good little book called "The Five Tibetans"
http://www.ehow.com/way_5721017_five-tibet...-exercises.htmlKundalini Yoga FAQ page :
http://www.eecs.berkeley.edu/~keutzer/kund...alini-yoga.htmlLaya Yoga and Kriya Yoga are other names for Kundalini Yoga (or were before all these names were "trademarked" and marketed by celebrity gurus and yogis. I couldn't find much on the Web that I would recommend regarding these terms.