Hmm...Learning the guitar in three months!!
Its possible if you've nothing else to do...
Heyy Pragati...I've got a Givson Jumbo too!!..it's a great guitar (mine is not a f-cut though) and its great for strumming and playing country! All the best to you!
Anyways, for ppl who're planning to learn the guitar by themselves, I recommend this site...
www.cyberfret.com
The chords and scale exercises on this site are good (and they have video clips too). I've learnt the guitar (picking exercises, chords and basic scales) from the net and went to a teacher only for advanced scales. I suggest, before you invest in a costly guitar and guitar class, try practicing at home at least for a week or 2...by borrowing a guitar from a friend or someone. You'll get the feel of it and find out whether you're enjoying it or not.
Learning the guitar requires patience (the chromatic exercises are the basics and ppl give up right there itself) and more importantly...genuine love for the instrument!!
And yeah...Hetfield and Hammett would shoot themselves if ppl played "For Whom..."...in 3 months..

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Cheers!!
Gaurav.
P.S: Puneet...you play for any band..mate??