Hi Mark
welcome. I would describe the sight as being broken down into teaser blocks with more information available through the search bar into various subjects. And the amount of resource material available from that search bar is pretty impressive.
But to start there are the absolute bare bones - Fundamentals - sounds like you have these down, then more advanced courses in Blues, Country, Rock and Acoustic. I would describe as intro courses to those genres. They just cover enough to get you started. If you wanted to take a deep dive into Blues, it's going to take an investment in time and many resources including studying the various artist you may want to play like.
I think we all need to determine what type of guitar player we want to be. Some just want to play songs and don't care why the song uses the chords it does. Fine.
Some want to go further and not only learn songs, but write songs to gain a better understanding of why the song is structured the way it is.
There are others who want a complete understanding of music. I am not saying the site has everything you will ever need to know about music, but it has a lot of material available for the self directed.
I think once we have the very basics down, it's a good idea to let our natural curiosity guide us along as to what to study next.
I am sure at some point, one of the instructors will see your post and add to this, and it will likely be Christopher, and I am guessing he would likely want to know what you can do now and what you want to do tomorrow. But if he does not see this, as Full Access, you have can post on his forum.
Bill
One more pizza for the road!