I have been practicing for a few years taking both classes and studying privately. The best thing it has done for me is taught me how to breathe.You don't realize how bad you can be at it until you learn to do it right.
Yoga is not a religion, but a way to bring mind, body and spirit together for a more balanced life. I consider it an important part of my recovery.
My practice gives me the time to not think about all that is going on. It has drawn me to a community of people that care.
If you are interested, I too suggest that you take some classes, preferably intro. You will learn the basic poses, how to breathe, etc. Hatha is the practice that most others stem from.
And remember its not about how far you fan bend or getting your ankle behind your head, its about finding peace within yourself.
Good luck