few useful websites(this will be regularly updated)

http://www.downloadvilla.com/Engineering.html

http://www.requestbooks.co.cc/2009/03/post-gate-guide-previous-year-cut-off.html

www.nptel.iitm.ac.in

http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/index

http://in.youtube.com/user/nptelhrd

http://ebooksfreee4u.blogspot.com/

http://sites.google.com/site/gate-ece/Home/books

http://www.madeeasypublications.org/

http://www.nodia.co.in/SampleChapters.html

http://ultimatesimplicity.blogspot.com/

http://www.freebookspot.in/

http://www.complore.com/

http://www.eceblog.co.nr/

http://mritsec.blogspot.com/2008/10/if-you-want-to-see-these-animations.html

http://www.outlookindia.com/article.aspx?250245

http://gateforum.com/gate_papers.php

http://www.gate.isgreat.org/

http://www.allaboutcircuits.com/