I am a huge fan of my college music library. If you live near a college, they probably have a music library too.
Everyone can share and post his sheet music in the forum, and if you can't find the sheet music for a certain song, people can help you in the "Sheet Music Request Section" to find it then.
I'm a beginning guitarist, and although I can read tabs, I thought that I needed to be able to read chords too. http://segression.com.au/
Whenever the guitar is simply providing background music to the singer or whatever is playing the melody by chomping on power chords or strumming simple chords, it is playing rhythm. http://buffalotales.com.au/