I wouldn't think the primary problem with a non-coder working with wordpress would be an inability to look up a function in the docs. Once you've gotten to that

I wouldn't think the primary problem with a non-coder working with wordpress would be an inability to look up a function in the docs. Once you've gotten to that point, the actual looking up is trivial. There are a lot of other steps you need to follow first, and knowing how to do them or that they even need to be done would seem to me a greater impediment: setting up a local server, creating a database for the install, getting the wp-config.php file, configuring said file (knowing the database credentials), knowing what a theme is and why you need one, understanding the theme files and hierarchy, being able to read php well enough to understand a functions is even being called, etc. None of these things are particularly difficult, and they all have good documentation and tutorials, but I would think someone who was resistant to looking up a function signature would probably get bogged down and give up somewhere higher up on the list. Now, this could still be useful for learners, I just don't know that the target is designers who can't be bothered to learn.