How can I(from India) earn a good money from Internet without any Investment/ Fee.?

I am tired of trying many ways to earn money from Internet for a long time. I tried many ways but failed. Please help me I am a student so can't invest any money. (I am good at AutoCad %26amp; 3d Max designing for interior and exterior)
How can I(from India) earn a good money from Internet without any Investment/ Fee.?
It doesn't matter what country you are in, internet 'job-opportunities' are virtually all worthless. I have never heard of a legit one.