There's a ton of music blogs with information about guitars, bass, drums, keyboards and vocals out there. I've done some surfing and found a list of some of the top rated blogs for you. There's enough videos, information and lessons on these blogs to keep you busy for a long, long time.
The Rock House Blog
MarkWeinGuitarLessons.com Marks Guitar Blog Guitar Noize IG Blog Strat-O-Blogster Guitar MX Mad Stratter Guitarz Building the Ergonomic Guitar Guitritus Musician's Notebook GuitarToyBox IGUITARGOD Mr. Blues Guy markmcguigan.com Acoustic Guitar Player iFingers Guitar Experience Play Like a Girl Electric Guitar Review Guitar Novice Truth in Shredding Thumbrella Music Ramble The Soul of Rock and Roll Guitar Lifestyle GuitaroJam News Music Gadgets The Guitar Channel The Guitar Resource Guitar Stuff Axe Victim ATOMIC Guitarist