Paul Andersen lists major evidence for the existence of evolution. He begins with a discussion of Charles Darwin and the evidence that he presented in the Origin of Species, including biogeography, fossils, and homologies. He also explains how DNA evidence can be used to trace evolutionary history.
Crash Course Biology #20 - Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.
(feel free to ask questions about them in class)