No, it's really easy to publish, the slight complexity is designing the book cover to meet precise printing guidelines. Also maintaining ebook and paper copies and keeping them synched. I didn't bother to create a custom book cover for the ebook version because it's rarely seen.
The decision to go with Amazon was a given due to their global reach and zero cost. Many serious authors are concerned about the strangle hold the effective monopoly has on them, but I'm not doing this for money.
I have sold copies of my book to friends, family colleagues and former employees around the world, which would be extremely difficult to do with any other publisher.