Higher Level Math Video Resources

Hello! I'm completely new to this forum and hope someone here can possibly point me in the right direction.

Currently i am taking calc3 (series, sequences...etc). So far throughout my calc classes i've been supplementing what the teacher have provided with various math videos. I've been mainly getting my videos from hotmath.com... but i am about done with the highest level of math videos they provide. After calc3 i'll be going to calc4 then differential equations and so on, and i'd highly appreciate having some videos in a single place that i could rely on to clarify something i may have missed. That and i learn quite a bit easier with video material.

Does anyone here know of a particular resource where such videos exist?

Thanks

helpful information about free mathematics video lectures

The following site contains many free video lectures in mathematics:

Khan Academy