Hello, everyone! I'm the maker of this book/course, so let me know if you have any questions.
The inspiration for writing this was my own frustrating experience when I wanted to learn how to build APIs in Rails. I found that, while there was no shortage of material available on the Internet, it was scattered, disjointed, and of varying quality. I wanted to write a first-class, comprehensive tutorial for beginning and intermediate API developers who were looking to take advantage of what Rails 5 and the surrounding ecosystem has to offer.
The course is available in two formats: as a paid instant download (PDF) or as a free six-week email course.