so ive been playin guitar for about 2 years. all self taught a lil help of the other guitarist in our band. i know some music theory and i believe im ready to move on to way advanced stuff. so i was just curious, is there a good website where i can find advanced techniques or songwriting aid?

and also, what are some good guitar dvds and videos that are online or you have to buy or anything? im just looking to expand my playability and writing ability.

any help is greatly appreciated
o by the way, i play mainly metal, but am VERY open minded when it comes to playing guitar