The site isn't opening for me right now either; it states that they're working to "rectify" it

.
Oh, I'd definitely pick up the HTML basics before plunging deeply into Dreamweaver. It will be less frustrating that way when it does come to, i.e., Dreamweaver.
Just a BTW note: I haven't a preference for Dreamweaver. I'm only using it as an example of a program application that can possibly make learning HTML coding easier.
Any program, actually, that enables viewing the underlying coding can be useful to use/have.
It sounds like you're working on your plans, and that's cool

.
If Voc Rehab will be assisting, I know that you already realize this (and possibly Voc Rehab. evaluator doesn't)... if voc rehab is helping, have the evaluator get the term correct. Web Designer is what you want and that's what they should cite.
I'm sure you'll learn this: Just make sure to verify or validate the designs you create by viewing in various browsers.
__________________
".... This world wasn't built for people in wheelchairs ...."
.