This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
It really depends on your target audience. Hindi and UK English should cover most people. Actually, IMO, UK English should cover most computer users, but I might be wrong there. Depending on your target audience, you might want to use a local language