What is Yoga?
Answers to the question "what is yoga?" Ann Pizer, About Guide to Yoga offers a basic definition of what yoga is for the beginner.
Yoga - Quick Tips
Subhamoy Das, About.com's Hinduism Guide, offers suggestions on how to get the best out of your Yoga routine.
Yoga: The Big Picture
Hatha Yoga is only a small part of what yoga is. Here is a page that touches on yoga's origins, and lists some of the more popular yoga styles.
Your Yoga Plan
Are you a student? Housewife? Working or pregnant (or both?). Here's a pull-down menu that will instantly give you a set of yoga postures that are geared towards your lifestyle and fitness level (obviously not a replacement for a real class...but fun nevertheless!).
An excellent article describing the primary reasons why people do yoga now, as they have for thousands of years.
The Yoga System
A clear presentation of Yoga. It stresses the importance of asanas, pranayama, and concentration, combined.