Although I understand the reasons others have chosen a complete system from square. I don't recommend it. Just like GoDaddy and their ilk you are then a captive slave and lose all your autonomy. It's virtually impossible to move or do anything different than follow their rules. I'd rather buy my own domains and move them whenever and wherever I want.
I don't entirely understand that. I have move sites that were with GD away from GD, no big deal. (I did however leave the domain register with GD)
I'm a big advocate of registering domains with one Co., and hosting with another. Makes any movement much easier. I currently have domains with GD, hosting with Hostgator and email with Zoho. I'm no super boffin but each have patient, good tech support used to dealing with neophytes. Especially HG, can't believe they are still in business based on how little it costs and how much of their time I've gotten.
Thats all just mechanics, anyone can do it, just takes patience and willingness to learn and buddy up to tech support.
The bigger question is how are you going do the content? You'll go broke paying someone to do it and sites need to be dynamic, i.e. you're going to want to be constantly changing, adding and modifying.
My recommendation is learn how to build sites in Word Press. Its
free and while there is a learning curve, it is like learning a new piece of software vs coding, no nasty HTML knowledge needed. 43% of the worlds web sites run on it. There are countless addins and the general shtick with each you get a lot for free but can elect to pay more for the premium version. I've never paid for anything and want to keep it that way! Did I say free? No monthly fees?
You start by trying it out with an installation on a local machine. Power through all the new BS (creating databases etc) and follow the tuts and you'll be working on your site in a few hours. You can do that today and start building the site as you figure out who you want to host it.
As for Etsy, business point not IT, but is the lions share of the value proposition the access to the market, or ecommerce function. I can make a site to sell stuff, but its not going to bring me the world the way for example ebay does. I don't know her business, so maybe it is worth, I'm just asking the question. There are ecommerce plug ins for WP but its probably not going to be as simple as calling shopify and paying them.