Education in India has grown and improved a lot. As a part of e-governance, education system and books are made available online on Internet.
http://www.education.nic.in/
GOI Directory for Education:
http://goidirectory.nic.in/education.htm
CBSE - Central Board of Secondary Education
http://cbse.nic.in/
MHRD - Department of Higher Education
http://www.education.nic.in/Higedu.asp
Education Support in India
http://www.educationsupport.nic.in/
National Council of Education Research & Training
http://www.ncert.nic.in/index.htm (you can get online books and download books)
Online books at NCERT:
http://www.ncert.nic.in/textbooks/testing/Index.htm
Tamil Nadu:
Now education is online everywhere... starting from Class I to Class 12.
http://www.textbooksonline.tn
Question Banks for Classes X, XI, XII
http://dge.tn.gov.in/
Engineering courses:
IIT Madras: IIT Course Videos on YouTube for E-learning
http://nptel.iitm.ac.in/
Over 20 Video courses in science & engineering of the IITs have been on free trial runs on YouTube: http://youtube.com/nptelhrd
You may also be interested for MIT Courseware
http://ocw.mit.edu/
Please feel free to add your comments...