I don't know much about HTML, but I do know that it's a formatting language. HTML 5 allows you to incorporate media stuff for music and videos and probably a few other advanced things too.
For writing HTML, I like using a programming interface, like Visual Studio. You're writing basic text files that can be read by Notepad, but something like Visual Studio will allow you to automatically indent, color-highlight syntax and keywords and will have auto-fill suggestions (Intellitype).
I also know that <table> was used a lot when I first started writing web pages, but has since been replaced by the more flexible <div> tag. Also, if you learn a good bit about CSS (Cascading Style Sheets), that'll help a lot too. There's a lot of powerful commands in the CSS files you can do within HTML5 these days.
One other thing you might want to learn is a web programming language such as PHP, which will allow you to create dynamic web pages, that get content from within a database. It took me about two weeks to get comfortable with PHP, so it's not really that difficult to learn. Finally for coding, you'll want to learn some JavaScript. That will allow you to do some other advanced things without having to constantly refresh the webpage, as that code runs in the browser on the visiting computer, not the server hosting the webpage.
Now that you're head surely has exploded with info-dump, how would you like to proceed?
