freeCodeCamp

Offering some amazing tracks, freeCodeCamp is one of the top resources for learning HTML, CSS and JavaScript online. Plus...it's free! Can't really argue with that.

Codecademy

Codecademy offers a number of free lessons for a variety of languages. To get the full courses, you typically need to sign up to the pro membership. But you can get a lot of learning done for free.

CS50

A brilliant resource for anyone who wants to learn some Computer Science. David J. Malan does an amazing job delivering the course in an engaging way.

Udacity

Udacity offers an incredible array of free individual courses. They also offer paid nanodegree programmes if you're looking for something with more structure..

BitDegree

BitDegree is the world's first blockchain-powered, smart-incentive based online education platform which will revolutionize global education and tech recruiting.

Udemy

Udemy is an online learning and teaching marketplace with over 130000 courses and 35 million students.

Envato Tuts+

Learn new creative and technical skills with 1,290+ video-based courses and short courses to help you develop. From code and web design courses to photography and design & illustration courses, it’s all here.

Khan Academy

Khan Academy offers some amazing introductory courses to HTML, CSS and JavaScript. There is a good mixture of video lessons and coding challenges to keep you interested.

Offering some amazing tracks, freeCodeCamp is one of the top resources for learning HTML, CSS and JavaScript online. Plus...it's free! Can't really argue with that.

Wes Bos: Flexbox

Flexbox makes CSS just work, which is no easy feat. Get a perfect introduction to it here.

Wes Bos: CSS Grid

CSS Grid will change how you create website layouts. Learn how for free from Wes Bos in this brilliant CSS Grid course.

Wes Bos: JavaScript 30

Wes Bos offers another amazing (and free) course to help you develop your JavaScript skills.

Freecodecamp

Conquering Responsive Layouts Kevin Powell takes you through everything you need to know to create responsive layouts in his brilliant 21-day course.

Upcase by thoughtbot

thoughtbot have very kindly open sourced Upcase, their online learning platform. It's full of extremely useful "trails" to help you upskill with topics like Mastering Git and Design for Developers.