Khan Academy has some of the best content I have seen. This great website has helped me through my beginnings and now I love mathematics with the passion! The great thing about Khan Academy is not only the accuracy but the way Sal and others present the concepts. 

Now there is a topic that I would like to request! Would you guys ever consider creating a playlist on the basics of Actuarial Science? Or just the general concepts? I am going to school soon for actuary! I am excited. If not, maybe some day in the future, I could donate some of my experience.

Regards!