Coming from WordPress, how steep is the Wix Studio learning curve?

If you're moving an existing WordPress site over, export the full list of URLs before you start. Wix uses its own URL structure, especially for blog posts and dynamic pages, so most of the old URLs will change. Set up 301s in the URL Redirect Manager before the domain switches, or you throw away whatever rankings the old site had.

not steep. the editor is visual so the first few days are just learning where things are. the part that takes a bit longer is the responsive side, breakpoints and how sections behave when you resize, but if you've used a page builder like elementor it'll feel familiar. CMS collections are basically custom post types with dynamic pages, so that maps over nicely too. the bigger adjustment isn't learning, it's the trade off. no plugin for everything, hosting is wix only and you can't export the site and move it elsewhere later. make sure that's fine for the client before you commit.