Some more interesting websites for computer engineering/science students

1.http://www.geeksforgeeks.org/

2. For Engineering study material/video lectures, following is a site funded by MHRD, Govt. of India
http://www.nptel.iitm.ac.in/

3. Book download website
www.en.bookfi.org

good link for GATE aspirants

http://www.cse.iitk.ac.in/users/dvjrao/gate.htm