Beginners yoga course?

[silviarambles]

Hi everyone, I've been going to random yoga classes at my gym for a while, but I'd like to learn the basics properly. Does anyone know of any good beginners course, possibly in North London? One that seems to pop up everywhere is at Triyoga, but I'm not sure how much it's because it's 'cool' or because it's actually good value for money..

Any advice on this would be greatly appreciated, thanks!