Hey @boltwood welcome to the forum!
Don't let that put you off! ProcessWire is a very powerful system and leaves it totally open what we as developers do with our data. Basically it has been a headless CMS since its beginning < 2010 just back then without anybody knowing what a headless CMS was and that this would become a hype more than a decade later...
As a consequence of being so open and flexible, the learning curve might feel steep at first, but that's because you're learning a system that gives you real development freedom rather than forcing you into predefined patterns. Stick with it - many of us have made the switch from other systems and never looked back!
Feel free to ask specific questions as you go along. This community is here to help you succeed and is usually very fast with helpful answers! π
PS: @Jonathan Lahijani has made some videos comparing Wordpress and ProcessWire side by side, which might be helpful: