You will find all the information you need to build proper HTML. A code ment to last, to be readable and understandable. You'll also get to see the actual code in the examples included. Feel free to use it.
It's very important that you write your code in one or more separate spreadsheets to make it ease to interpret and to recycle. Don't mix your CSS with your HTML. It's never too late!
If you are going to build a site with your Scripts embedded into the HTML you're stealing your's future time. Make code so good that can be reused. Correct it. Debug it!