Mastering Bitcoin - The Bible for Bitcoin
UX Challenges - Done reading about UX? Start doing it.
30 Seconds of Knowledge - Become a better developer, in every new tab.
Befront - Learn UX/UI design skills in practice with bite-sized tasks
Random User-Agent - Automatically change the user agent after specified period of time to a randomly selected one, thus...
Frontend Mentor - Supercharge your front-end skills by building in a real-life workflow. Solve real-world HTML, CSS and JavaScript challenges whilst working to professional quality designs.