Science Buddies: "Ask an Expert"

Hello
I am a 15 year old sophomore from India who would like to take some rigorous courses of Calculus and math classes for long for my research work and college entrance into MIT.Please help me with the search.
please suggest me some courses /classes i can register inorder to have an advanced understanding on relativit & astronomy,and to do research on this field/
Thanks
Hanaan

Hanaan,
This forum is intended to help student with questions on their science projects. As such, I don't have much to offer in terms of advice. In particular, it's difficult to recommend specific things without knowing the details of your past eductation. That will drive the level of classes that would be appropriate to tackle next. I think the academic advisors at your school would be the best sources of information for advanced classes.
Mike