I just finished a job working on a CMS (content management system) for a business on the West Coast. This job used software that is used just for businesses and costs a lot of money per month. It required knowing HTML and a few things that I knew from over the years. It took me a while to learn the idiosyncrasies of the software, which is common for every system you pick up.
My next possible client is with another company, also on the West Coast. They needed something for businesses, as well, that allowed the business to keep a list of clients and have a shopping cart. Square Space was recommended. I signed up for a free 14-day trial and made a website for the client, just to show them that it could be done. It was a success.
If you've ever used Wix, Weebly, or WordPress, you could probably use Square Space. It's similar to all of those CMS systems, where you plug the information in using WYSIWYG (What You See is What You Get). You don't need to know HTML, but if you want to do simple things (like change the color of the font), it's good to know how to code. There aren't as many themes as in WordPress, but they support their themes. Sometimes, the themes in WordPress are sent in by users and aren't supported.
It's been a fun thing to learn. I've heard of people in NY charging $4500 for one of these websites on Square Space. Even if I can get a quarter of that for a few hours' work, that'd be fantastic!
If you're an author, you might want to consider one of these CMS systems to promote your website. Although they can be quirky, overall, they're easy to use and easy to learn.
Or you could just do like I do for all my personal websites, and code it yourself. It takes longer to learn to do that, but the quirkiness is gone.
Have a great week!