[ghaff]

From your description, probably not if you're just curious.

- Writing a book is a lot of writing--even if you do a shorter one. At a minimum, I'd start blogging on the topic before tackling a book.

- "create a strong resume" Under the right circumstances, the right book can add to a strong resume but it's not going to create one by itself. And books from name publishers in the space will have more effect--fairly or not.

- "some bit of passive income" Don't count on it. There are outliers but you're going to have to pay up-front for services like editing and probably design. (And these aren't really optional.) You may or may not earn the cost of those back.

I've written books and they've been useful reputationally. They're also a lot of work, I've been able to write them partially on company time, and they're a direct fit with my day job.