W3Schools offers coding tutorials and reference guides on HTML and CSS. It’s free, but those who pay $95 can earn an HTML or CSS certificate after passing an online exam.

We list the best HTML online courses, to make it simple and easy to improve your website design and development skills, from beginner to advanced level. HTML and CSS form the basic coding ...

If you're an aspiring web developer or completely new to coding, JavaScript is a great start. We've put together some of the best free and paid online courses to help you learn this popular coding ...

Back in 2012, Mozilla launched Thimble, an online code editor for teaching the basics of HTML, CSS and JavaScript. Over time, though, things got pretty quiet around the project as other browser ...

General Assembly has launched a new online service that teaches basic web development for free, in your browser. It's called Dash, and it lets users learn how to use HTML, Javascript, and CSS by ...

jsFiddle is the perfect solution; it provides a custom environment (based on user selections) to test (or fiddle with) your JavaScript, HTML, and CSS code right inside your browser.

It allows you to edit PHP, HTML, CSS and JavaScript files, and it highlights the syntax and provides hints for tags, functions and their parameters. This editor deals with files that contain mixed ...