Depends what language you want to learn. For the HTML/CSS side, I always prefered http://htmldog.com http://htmldog.com, since it was (unlike W3Schools) mostly

Depends what language you want to learn. For the HTML/CSS side, I always prefered http://htmldog.com http://htmldog.com, since it was (unlike W3Schools) mostly inline with standards and quality expectations in what it taught and did so in a clear and easy to understand way. Obviously https://css-tricks.com https://css-tricks.com is recommended too, because Chris Coyier is amazing at CSS (and writing about it), with him and his other writers managing to run a site which not only teaches the basics of CSS, but also keep you up to date with the developments in it too. Mozilla has a good reference for this stuff, aka MDN. Tons of information about HTML, CSS and JavaScript there, as well as an extremely comprehensive reference for every event type, object data, CSS property, etc: https://developer.mozilla.org/en-US/ https://developer.mozilla.org/en-US/ If you want help with React, well the official site is pretty good on the documentation front: https://reactjs.org/tutorial/tutorial.html https://reactjs.org/tutorial/tutorial.html And if you're willing to pay a bit, I found this video tutorial series on the subject absolutely fantastic for learning it too: https://frontendmasters.com/courses/complete-react-v4/ https://frontendmasters.com/courses/complete-react-v4/ Hope that helps!