Getting Ready For HTTP/2: A Guide For Web Designers And Developers
The Hypertext Transfer Protocol (HTTP) is the protocol that governs the connection between your server and the browsers of your website’s visitors. For the first time since 1999, we have a new version of this protocol, and it promises far faster websites for everyone.
A good article by Rachel Andrew on Smashing Magazine about basics of HTTP/2 and some of the common best practices that will become anti-patterns as the new protocol is adopted