This book was exactly what I went looking for...a way to learn more about the origins of yoga, and what different yoga disciplines there are. There are a lot of great tips in here, especially for beginners. (Apparently, I jumped right into the "deep end" of yoga, but was able to "swim" anyway!)
One thing this book emphasizes is that yoga can be for anyone...you don't have to be a human pretzel to enjoy the physical, mental, and spiritual benefits of yoga. Yoga is a journey, and no matter where you are when you start, there is always room to grow. For me, it's in flexibility, strength, and balance...of the mind, as well as of the body. I LOVE yoga!