Free Sheet Music Downloads - A directory of free sheet music and lessons that most music students (including guitarists as well as traditional music students) may find helpful. It's one of the largest and oldest on the Internet.

Kissthisguy.com: The Archive of Misheard Lyrics - This site's name derives from rock lyrics being sometimes hard to decipher. One famous mishearing of a line in Jimi Hendrix's "Purple Haze" goes 'scuse me, while I kiss this guy". The real lyric is 'scuse me, while I kiss the sky". The archive currently has 3,721 bungled lyrics and is still growing.

Metamusic Site - This site is searchable and you can search over 100 music-related sites. It is a good site to search for lyrics.