Totally agree...
Studios dedicated just to yoga are soooo much better than when gyms run classes.
How I did it: I learned some basic poses through the video "Yoga for Dummies." Yeah, I know. But the instructor was great, and it goes over the most common poses in a lot of detail. I did yoga videos at home for awhile, only occasionally trying a class at the gym. About six weeks ago, I took my first class at a real studio. I've been attending weekly since then, and I absolutely love it! I'm hooked for life.
Lessons & tips: Go to a real studio.