Gravitation, Mechanics IIT JEE Physics preparation, AIEEE Physics
http://www.exponenteducation.com helps in preparation for engineering entrance tests and medical entrance exams. One can crack IIT JEE, AIEEE etc. by using video solutions, sample papers available here. This JEE 2012 preparation video discusses an important IIT JEE Mechanics topic Gravitation potential due to a thin shell and gravitation potential due to a ring. Use good preparation books like HC Verma and NCERT for preparation, and then solve IIT JEE test modules for problem solving skills. Learning to manage time properly is equally important, so devise timed JEE mock tests and appear for it frequently. Practice using IIT sample test papers and previous years papers without referring to video JEE solutions. Finish the whole IIT JEE syllabus, rather than selectively studying only important topics for IIT JEE. http://www.youtube.com/user/exponenteducation and http://www.crackiitjee.com/video-lectures/ provides more problems and solutions of IIT JEE question papers, sample test papers"