Topic: Modern Physics for a layman
http://newpackettech.com/Resources/Susskind/Susskind.htm
it is a list of courses tought at Stanford University for people interested in deeper understanding of morden physics.
It involves some mathematics but is explained in such a way so that everyone can understand it (e.g. lecture 3 on general relativity introduces tensors and co- and contra-variant coordinates in an easy to understand way)