The NPTEL course material are available now through the link (http://annamalaiuniversity.ac.in/studport/download/nptel/MECH.xspf) The course material available are listed below. This can be accessed at the library.
Government Notification on Attestation of Certificates.
The Tamil Nadu Government has given the following notification on attesting certificates by Group A, B Officers being withdrawn and self attestation would suffice.