Learn HTML/CSS
A really popular site that teaches HTML and CSS in small chunks. Codecademy allows for beginners to see the effect of their code while practicing concepts.
Gerneral Assembly Dash is great for beginners and it allows you to head straight into real world applications. Along with the real world application, once you have finished all the projects theres an online HTML course.
This is a free to learn open book website that you can get started on quickly. Its always being updated so there is always more to learn and you can even get a certificate, if you really want to become official.
Another free way to learn HTML and CSS and many others. The resources are intuitive and allow you to learn many skills such as animation, games and webpages.
A great tool that is always being updated with new topics created by guest authors. Great starting and learning website for those who are new and familiar with HTML, CSS, and Javascript