I suggest you read the Handbook of Indian Copyright laws first here:
*www.education.nic.in/copyright.asp
That will give you the extent and limits of what all it covers.
Next, visit the official Copyright website:
*copyright.gov.in/
There is a link at the right for the form needed to register. That form should provide additional details.
Or if you want to go the more "
relaxed" way: Get
CreativeCommons license. You can't really sue people though, with that.