I trained through the “British Wheel Of Yoga” (BWY). The British Wheel of Yoga is the Sport England recognised national governing body for Yoga. It’s a tough 200 hour+ programme that usually lasts 2 years.
If yoga teacher training interests you, take a quick peek at the 101 yoga teacher training courses here: http://georgewatts.org/yoga-links/
BWY Yoga Teacher
Free yoga lesson planning tips & tools | http://GeorgeWatts.org
And after you are certified, I recommend lots of continuing education and personal development.
If you are ever coming to the Big Island of Hawaii, consider taking some CECs with me. You can write it off on your taxes as well. (How much depends on how much time you spend taking CECS. How many days with time spent, I believe. But check with your tax guy to be sure.)
If you are interested in becoming a certified barre instructor to teach barre fitness, you can get certified online at: www.AmericanBarreTechnique.com
I went through American Barre Technique and they have wonderful certification courses. 🙂