http://tympanus.net/Development/AnimatedHeaderBackgrounds/index3.html – Animated Background Headers
http://cssdeck.com – HTML5, CSS3, JS Demos, Creations and Experiments
http://sebastien-gabriel.com/designers-guide-to-dpi/home – Designer’s guide to DPI
https://developers.google.com/web/fundamentals/ – Web Fundamentals – Best practices for modern web development
http://ianlunn.github.io/Hover/ – A collection of CSS3 powered hover effects