An overview of how ReactJS uses its virtual DOM, diffing, and event delegation to achieve its performance.
A historical retrospective of various CSS text/image replacement techniques, with notes about the pros and cons of each.
Paul Ford lays out a thoughtful article/interactive experience trying to explain to the layperson, “what is code?”. It also delves a little into management of software development via a fictional (I hope) project. It’s long, but I encourage folks to set aside some time and go through it, whether or not you know anything about computer programming. It’s fun!
“Neat is a semantic grid framework built on top of Sass and Bourbon. It is simple enough to get you up and running in minutes, and powerful enough to handle any responsive layout you can dream of.”
A library of sass mixins to simplify CSS.
Great quickref site for finding entity codes of common symbols (copyright, trademark, euro, etc.)