PQCHacks: A gentle introduction to post-quantum cryptography posted December 2015
With all the current crypto talks out there you get the idea that crypto has problems. crypto has massive usability problems, has performance problems, has pitfalls for implementers, has crazy complexity in implementation, stupid standards, millions of lines of unauditable code, and then all of these problems are combined into a grand unified clusterfuck called Transport Layer Security.
It explains a few of the primitives backed by PQCrypto for a post-quantum world. I did myself a blog series on hash-based signatures which I think is clearer than the above video.