If you haven't read the first page, I recommend reading this page (click here!) for more info before continuing on.
So first, I'll point you to the "real" first tutorial. You can do the whole thing if you want, but you should at least get up until you can actually go to your own website (before the "HTML tags" header). Click here to look at the tutorial. The main goal of that tutorial is to give you a place to actually run and test your own website, because setting one up from scratch adds a lot of complexity. If you don't care about trying things out, you can just follow the tutorial and read along.
One more thing before we actually get started. In most browsers, you can view the html and css for any webpage by right-clicking on the window and picking View Page Source or Inspect (in Chrome at least). They're a little bit different. For View Page Source, that will let you see the html of any website you want (including your Facebooks and Googles). Inspect is a bit more specific in that it lets you look at specific elements. That's really useful once we get into css because you get to see how certain elements are styled (that is, why they look the way they do). Try to use View Page Source now on this tutorial site, you should see some hidden text right below this paragraph.
Once you've looked at that follow this link and we'll talk about the basics of html.