Can you suggest me a website where I can learn playing guitar. I am very interested in learning it.
If you want to improve on guitar fast I recommend http://tomhess.net/ if you would like to find professional and high quality electric guitar lessons.
http://devilsworkshop.org/top-5-websites-guitar-lessons/ (Indian sites)
There are tons of lessons on you tube. Also UltimateGuitar, chordie, a-zchords all give chords to thousands of songs. Justin Sandercoe does good lessons on youtube to give you a start once you learn the basic chords