I am just confused as all three are totally awesome to me.
1. Guitar
2. Violin
3. Drums
Tell me your preference and the reason
1. Guitar
2. Violin
3. Drums
Drums would be difficult cause you would need to purchase equipment and a full set is quite expensive. Also it does not have solo appeal. Guitar falls in the middle, cause it is relatively easier to learn as compared to the violin, primarily because it has fretts and you know where to place the fingers. For the violin you need a damn damn good ear. Both the violin and guitar should be easily to buy in India...!
What ever you decide to take up, FOR SURE learn to read music score, and practice your scales and arpeggios....! They are the base and foundation of a good musician. Some basic singing classes (scales again) also help to train the ear and improve sight playing (seeing score the first time and playing it).
Best of luck.
By the way, had 7 years of violin tutoring as part of my school curriculum, including orchestra/symphony disciplines as well as solo performances along with 5 levels of successful accreditation from the London School of music.....!