From what I've read, it sounds like Wordpress is quite widely used. I'm puzzled though why there's so few books out there for Wordpress developers. I'm thinking that surely if Wordpress is a lucrative field for a developer to get into, there would be more books out there, but I can only find a handful of them, and most of them are outdated.
So my question is this -- would it be worth it to pursue becoming a Wordpress developer? If so, why? If not, why?
Please be a professional Wordpress developer when you respond. Thanks.