To answer both of your questions. YBB is a series of DVD's called Yoga Booty Ballet. I have seen them in stores here in the US. I've seen it at Target and at Modells. I'm not sure if that's something you've got in Canada. I do know that through the internet you can find them on ebay.
I've found them at walmart. My walmart carries 2 dvds...YBB live with latin and lite, and YBB Masters with Goddess Booty and Yoga Core...I bought the latin and lite because I'm just starting out. I'm so excited to try.