Dude, if you want to take part in the MotoGP, firstly it'll be next to impossible to try it from India. Even Casey Stoner's family relocated to Spain from Australia to brighten his chances. You'll have to be outstanding in the Road Racing Series in India. Then if you're very, very lucky, you'll get unbiased sponsors and carry on to the Asia-Pacific Racing scene, from where you can go to Supersport (SBK) or try for 125cc class MotoGP. Cheers!