Here is an old classic lesson I made 9 years ago, which is crazy how fast time flies, it really doesn't feel that long ago, but that's ok because you can't kill the metal:
Please excuse the VHS quality of this video, I promise the lesson is a gooder. The Metal is of course a Tenacious D song, and is featured in the Pick of Destiny movie and album. If you haven't seen the movie yet, something very important is missing from your life and you should drop everything and watch it now!
If you can get through some hammer-ons and pull-offs this is a great fun riff to play!