Free video support for backup and revision

mysirg.com is repository of links of more than 850 videos which is a great support to the students who missed any class for any reason. He can watch lecture from these videos for absolutely free. These video lessons are also useful for revision purpose. It not only saves student time but easiest way to recall content of the lecture.
This is sometimes very helpful during exams of campus drive when you want a quick recap of what you have studied.