i do practice at home myself but i do like to take a class once a week or so. helps keep the form up. tv and yoga don't go!
Nope they don't, I agree. But neither does, for instance, driving a car to the yoga class.
I have books, taken classes and practice on my own, but when I practice on my own, I find it very helpful to listen to instructions. You don't want TV to be involved, don't watch just listen to the audio.