The following are great (and free) resources on the internet that are excellent for IIT-JEE and AIEEE preparation:


1. http://www.khanacademy.org

2. http://academicearth.org/subjects/

3. http://ocw.mit.edu/OcwWeb/web/home/home/index.htm

4. An MIT or Yale Education for Free

5. Free Math problem doubt clearing by experts