Personally

I found that going through teacher training gave me a great foundation for home practice (Diablo 3 Gold). First you are corrected in your alignment until it becomes organic so there is less chance of "doing it wrong" and hurting yourself. Many people take TT to deepen their own practice, not necessarily to teach.

Now I only find myself in front of a teacher about once a month... which you should probably do from time to time just to make sure you don't develop any bad habits.

I recently read somewhere that a good audio yoga class is better than online videos because a lot of times we spend trying to LOOK at the video while doing the pose. I tried to find the link for you that the article I read suggested but can't seem to find it (Diablo 3 Gold). But apparently there are those that the instruction is so good getting you into and out of poses that all you have to do is listen.