There are so many great music and guitar related websites.
I just added some of my personal favorites which you should check out.
You find much free stuff and useful information on these websites.
Funky Fingerstyle Guitar
Your Online Guide To Jazz Guitar
The Guitar School offers over 3200 pages of sheet music by Eythor Thorlaksson for the classical guitar.
Flamenco Guitar Techniques
Gypsy Jazz Secrets
Tools for learning to play the guitar. Videolessons, play-alongs, chords and scales. For free.
Over 1000 completely free guitar lessons.
Many tabs and lessons.
Detailed tutorials of popular songs.