This introduction presented you with the very basics of HTML.
In the rest of this tutorial you can study each of the different HTML tags in detail.
To the upper right on all pages you will find the HTML tutorial menu.
The links are arranged so you can approach this tutorial as an ongoing course.
Each link will take you to a "chapter" - 5 to 10 pages - explaining the selected topic in depth.
If you are completely new to HTML, you should start with the chapter about text and work your way through the links - ending with the chapter about hexadecimal colors.
For a complete overview of the tutorials and resources on this site you should look at the sitemap.