http://www.vedanet.com/
Will get your feet wet if you don't know too much about Ayurveda. It is
the internet home of Dr. David Frawley.
I have dabbled in Ayurvedic enough to recognize that much of what Yogiji
has been teaching us since 1969 comes right out of this system. Now it
is not so mysterious but rather like common sense.
Start with the article entitled "The Ayurvedic Affects of Asana
Practice, from Yoga For Your Type". It gives a basic description of the
Doshas plus a bunch more........a whole bunch more! A number of good
articles plus a correspondence course in Ayurvedic medicine
Sat Nam,
Dharam