But right now i do not know how it is possible to buy bitcoins without the use of bank and without going through exchanges specially in India.
It will become possible to get crypto-currency for free by joining a social network and just using it the way you normally use Internet sites. You will "earn" this crypto-currency.
Steemit.com pioneered this concept but for blogging only and their method is I think not optimum. I have a project coming for this. Stay tuned...