How do I learn to code in HTML and CSS on my Mac? Web design is one of the most useful skills you can learn, and it’s easy to learn HTML and CSS (the two main pillars of web pages) in Mac OS X.

Learning how to code will allow you to do everything from build complex apps to make your smart lights flash when you receive an email. Here's our guide on how to get started.

Lots of JavaScript developers use the Firebox extension to inspect HTML and modify the code in real time. You won’t need it at first, but it’ll come in handy as you progress.