I have been working to up my skills in the web development arena and have to say that The Odin Project is a great place to get started. The lesson plan directs you to not just learn the different languages required to create for the web, but also what is going on in the computer when you do things. It also gives you information about how to connect with other developers and how to progress your skills.

Some of the projects teach you to create images with a group of divs and pure CSS like this example of the Dancing Android character.

Also learning to re-create the basic display of the Google Home Page helps to learn styling techniques, using sprites and how to position objects.

Some of the best ways to learn HTML design are to take a web page that you like and try to re-create it without looking at the styling. Once you have a good approximation, see where you differed from the original.