i am a second pu student and i have not understood some of the concepts...where can i find videos that will explain the concepts clearly..

www.youtube.com is often the most preferred destination of many students for videos related to academics

you can find them in youtube, you can also understand topics by asking or discussing amongst your classmates who have properly attended the classes and concentrated well.

Hi Shalini, Your question is not clear. Please re-frame it for better assistance. Waiting for your revert!