Sameer,I don't know any online source.

Yes, I knew about it and I want to read it in English. Can you suggest me a site from where it can be downloaded for free? Or tell me if I can read it or any of our mythological stories online.

Very true Gudkuti.

Mahabharat is "Human Enclopedia" and Source of Knowledge. I mean not religious book but belong to entire Human race. 

Jay, Ramayan and Mahabharat are two entirely diffrent books.Ramayan is the story about Lord Rama and his victory over Ravana and you are right that Mahabharat is about war between Kourav and Pandav but Mahabharat has much more then war.Its talk about basic human emotions.