If you go looking it isn't too difficult to find material like this. Many of the posters hear have jumped in with their favorite resources. But, where do you al

If you go looking it isn't too difficult to find material like this. Many of the posters hear have jumped in with their favorite resources. But, where do you all go when you want to ask potentially dumb questions as you would an instructor in class or of classmates? Khan Academy has a nice Q/A section for each video, but the best I've seen is PhysicsForums. Anything better?