Another of those shady documentaries filled with misinformation?
Yes I am.
Well, understanding a video and understanding QED is not exactly the same thing.
If you're interested in quantum mechanics start by e.g. Griffith's intro to quantum mechanics and read Feynman's lectures simultaneously. After the basics, you can move to QED. Everything quantum is amazingly interesting. And it's not as complicated as most people claim. If you understand uni math it's simple enough.
If you are really interested, after reading some university math and possibly basics of QED you could also take a look at this: http://arxiv.org/pdf/1312.2007.pdf
It's on an interesting proposal for a theory beyond QED; they hypothesize that a mathematical object they call the Amplituhedron could be used in quantum mechanical theory to describe quantum events in a hugely simplified way.