QUOTE(Lucas65 @ Jul 3 2018, 04:57 PM)
When I go to the backend of my website the only changes I can make are my various GUI options. I have exhausted all those options. But there are a gazillion things I want to change via code on my website and this whole questions remains a black box, most frustrating that the code I have learned in my HTML class is useless because I don't know how to access my editable code.
Wordpress is probably
not a good choice if you want to experiment writing your own HTML and CSS. The HTML and CSS code on Wordpress pages is generated by PHP scripts on the server, and most of the text content is stored in a database. That means you can't edit most of the content directly, like you would with a static web page (see below). You might install different Wordpress templates and plugins, and maybe even customize the templates, but doing so may require experience with PHP. There are Wordpress tutorials and support forums, but again I wouldn't start with Wordpress if you want to learn HTML.
QUOTE
Again, I need a simpler explanation and steps or procedures. I have no idea what "FTP program" and "transfer files" has to do with the code behind my website.
"FTP" means File Transfer Protocol, and an FTP program is for transfering files. The traditional way of making web pages is to create the files in a text editor on your own computer, then transfer the files to a web server with FTP.
If you just want to experiment with HTML and CSS by yourself, you don't need a web server (and thus no FTP). Instead you can edit and view pages directly from your local file system (though you may get security warnings if you run javascript in local HTML files nowadays). If you also want to learn PHP and SQL by yourself, you can install a local test server on your computer, such as XAMPP.
If you do want to publish your HTML pages on the web, you first of all need a web host account (it sounds like you already have that if you have Wordpress installed?). Next, download and install an FTP program (such as Filezilla) on your computer. Start the program and enter your web host account details (often web hosts have instructions on how to do this). Now you can login to your web host account's file system, and transfer HTML files etc from your own computer.