Hi there, Yoga teacher here... I may be a little biased because of that
but I think yoga is the bomb!
I've been practicing for over 15 years and teaching for 5 of them. It has helped me in so many ways, and I was always so humbled and glad to see how many of my students were profoundly effected by it as well --- weight loss, stress reduction, ending chronic pain -- the list goes on. I personally believe the poses can help open up energy channels in the pelvis and throughout the body, similar to acupuncture, which can be very healing for people with PCOS.
There are a lot of good DVD's out there. The Gaiam series with Rodney Yee are okay. Total Yoga with Tracy Rich is a good one too.
DVD's can get a little dry and impersonal though. I recommend that you find a studio to practice at. It's kind of like finding a therapist -- You may have to try out many studios and many different teachers to find a class you love and will stick to. And if you go to a class and you don't feel good afterwards, don't blame yourself. It probably wasn't a good match for you.
Here's a link with names of yoga centres all over the globe!
http://www.yogajournal.com/directory...?ctsrc=hptpnav
The Yoga Journal website also has great articles for beginners: yogajournal.com
There are so many styles of yoga being taught out there -- all of them fall under the general umbrella of "Hatha Yoga" which basically means the physical practice of yoga. All Hatha Yoga classes should include breathing exercises, physical postures, meditation, and deep relaxation.
Let me see if I can give you a quick run down of some of the most common types of Hatha Yoga:
Bikram
Very popular franchise -- springing up like Mickey D's across the country. It is the "hot yoga" where the room is heated to 110 degrees and a set series of 26 postures are performed. Pros= Good for weight loss and detoxification. Very nice on a cold winter day! And if it bears the Bikram name, you can be sure the teacher was certified to teach that type of yoga and it will be very standardized. It's a great way for folks who feel too stiff to do yoga to get started. Cons = well, this is just my personal 2 cents, but I think practicing in a room that hot over taxes the nervous system (and the point is to relax, not get stressed, right?), and if you are overweight and have circulatory or heart problems it could be just downright dangerous. You also run the risk of injury as the heat can make you unaware of you limits. While I've met a number of good Bikram teachers, they are also notorious for being booty camp army sergeants -- i.e. not too nurturing. Definitely not a meditative type of yoga.
Vinyasa Yoga (sometimes called Power Yoga)
Another very physical style of yoga. The classes usually flow from pose to pose with a lot of energy. Includes lots of sun salutations (a series of flowing poses) and energetic standing postures, balancing poses, upside down poses, etc.. This is a very catch-all label and you could show up to 10 different Vinyasa classes with 10 different teachers and never get the same thing. It should include deep relaxation at the end, as well as breathing exercises and meditation. A well trained teacher should be able to tell you specific points about each pose (body alignment) and should never force a student to try something they aren't physically ready for.
Jivamukti yoga is a popular type of yoga that falls into this category.
Astanga Yoga (also sometimes called Power Yoga)
Similar to Vinyasa yoga in that it is physical and sweaty, and the postures flow together, but it is based on a set series that remains the same from class to class. First you learn the primary series, and then you advance on. Pro's = once you've learned it, it's pretty easy to practice on your own at home because it's a set series. Con's = not all postures are good for all body's and an inexperienced teacher might push you to do all of them. Also it can get a little competitive, as folks start striving to make it to the next level or series they might start to unconsciously compete with each other or themselves (kinda not the point of yoga, right?)
Aunsara Yoga
This is another very popular yoga that's been sweeping the globe... It's physical, but not in the flowing dance like way Vinyasa and Astanga are. Postures are done mostly one at a time with tons emphasis on proper alignment. There is a very codified system of exactly how to perform each posture. Pros = teachers are very very well trained. Con's = can be a little too analytical for some. The name anusara means "flowing with grace" and good teachers will incorporate philosophy and a lot of "heart -speak" language into the classes. Most classes also include breathing exercises and meditation. I've met a lot of wonderful anusara teachers.
Iyengar Yoga
This is one of the grand-daddy's of yoga. Mr. Iyengar is the first person to really popularize it in the west. Like Anusara, it is highly highly codified. Emphasis is on how to do each posture correctly. There is very little chance you will get injured in these classes, and there are a lot of props used (benches, blocks, straps, ropes). Iyengar teachers have to go through probably the most rigorous training of all styles. I often recommend Iyengar to people who are dealing with specific injuries, and it is a lot like physical therapy. Cons might be that it is not warm and fuzzy yoga at all and it can be a little analytical and dry. Teachers are very strict and sometimes sound down right mean -- as this is exactly how Mr. Iyengar teaches. But it varies, and you might just find a super lovely sweet mushy Iyengar teacher.
Sivananda
Very spiritual, meditative yoga. Physical postures are fairly simple and easily adaptable for all levels. Sometimes it can over emphasize the sitting postures which if you are tight in your hamstrings or hips might make you feel uncomfortable. It is a pretty gentle easy going type of yoga, and there are retreat centres all over the globe, where they train a lot of teachers and hand out a lot of teaching certificates -- which leads to some great teachers, and some not so great ones... In my experience there is little emphasis on alignment however, so if you have any injuries you'll want to be careful. Also, this type of yoga frequently uses a lot of Hindu symbolism, chanting, mantra, etc... as it's window into spirituality. Of course as always you just take what you take and leave the rest, but if you are sensitive to this and feel it might conflict with your own beliefs, it may not be for you. But! Not all (few in fact) Sivinanda trained teachers bring this heavily into their classes -- mostly it's found just the centres that carry the specific Sivananda name, so don't shy away from trying out a teacher just because they say they are Sivananda trained.
Integral Yoga
Founded by Swami Satchidananda -- the guy who taught the hippies to chant OM at Woodstock. Very similar to Sivananda (they two founders of these lineages had the same teacher.) Very meditative and spiritual, easy going and relaxing. You may sweat, as there still are physical postures but I wouldn't call it weight loss yoga and there isn't a kind of boot camp emphasis on alignment. Teachers are frequently lovely, hippy, earthy, viby folks. It's a great place for a beginner to start. Same drawbacks as Sivananda may apply. But as will all the styles so much of it depends on the specific person teaching it, so give it a try, and maybe even give more than one teacher a try.
And keep in mind that yoga is intended to be a very practical set of tools to help you find peace and ease in your life. It isn't a religion. It asks that you have some faith in something greater than yourself, but you get to fill in the blanks on that, so it leaves itself open to people from all religions -- yoga is all about acceptance and tolerance, and if you are too, well then it's a perfect fit!
If anyone has any specific questions about anything — poses, teachers, etc.-- I'm always more than happy to answer -- feel free to post or email me directly!
om shanti (love and peace)
Does Yoga help? 
). Thanks for any insight.
I figured since it was good for your verall health, it might help with some of the PCOS symptoms. I get stressed a lot..and when I'm stressed my symptoms get worse as well. I just don't know if there's any parituclar type that would be better than others..I guess the kind that's more focused on meditation/calming/etc than the weight loss? Although I could use both 
I'll try to find out the company and let you know who makes it...
