Ilya Grigorik from Google gave a great talk during the last O'Reilly Velocity conference in May, and it's now public:

If you haven't followed all the details of HTTP2 RFC (and even if you had), it's a great primer followed with so many pieces of information!

Watch it on Youtube: Yesterday's perf best-practices are today's HTTP/2 anti-patterns - Velocity 2015 (Santa Clara)