I have been battling with the WP REST API for a bit over a month now. There have been a few snags mostly to do with a lack of documentation but also due to a couple of issues that have slowed me down.
So that there is something out there to help the REST of the world I am putting out my own examples to show that once you have a proper handle on it this can be a very powerful tool indeed. The examples and tutorials I will be building will be split into two main sections being WP internal and external. This is primarily because I suspect that this is the way that the api will be used and evolve. Furthermore I will try to give practical examples of why you would do something like this rather than just use the existing WordPress infrastructure.