Theory and practice in free guitar videos

You might be able to remember when all knowledge came in books. If you wanted to learn a practical skill like guitar playing, you needed to find someone who already knew how to play the guitar and pay him to teach you. But we live in a different age now. We can get a boatload of knowledge on any subject in seconds via the internet. We no longer even need to go to the library. We have video sites where we can find free guitar video lessons showing us the theory and techniques of any guitar playing style.

Free guitar lessons on video

I found these sites featuring videos and articles with some major guitar lessons.
Electric Guitar Videos

Guitar Lessons On Video

Free Guitar Video Lessons