http://tabcrawler.com/
http://www.allguitartabs.com/
http://www.musictheory.net/translations.html
http://www.vocalist.org.uk/free_sheet_music_links.html
http://www.google.com/search?sourceid=navclient-ff&ie=UTF-8&rlz=1B2GGGL_enUS176&q=ultimate-guitar.com
http://www.google.com/search?sourceid=navclient-ff&ie=UTF-8&rlz=1B2GGGL_enUS176&q=911Tabs.Com
http://www.fretplay.com/tabs/m/mc5/
http://www.letssingit.com.au/
References :

Try these links below-

http://www.ultimate-guitar.com
http://www.chordie.com/
http://www.tabpower.com
http://www.guitartabbooks.com/freeles
http://www.guitarlessonsonvideo.com
References :

I learned to play guitar using a home study course ("online course") myself. Best advice i can give you is to go to ReviewsNest.com – the reviews site where i read about the course i bought: http://www.reviewsnest.com/GuitarLessons . They give free reviews for several guitar courses, tell U what to look for in a course, and what u get in each course they checked.
I bought the LMG course (their top pick) and it is great, but costs $250 (i got it on sale for $200), so it depends on how deep your pockets are and how serious you are with your playing. Maybe you’d like something less expensive – but they have reviews for cheaper courses too.
Good luck, whatever you choose.
Andy.
References :
a reviews website:
http://www.reviewsnest.com/GuitarLessons