Show HN: Our new Core Data book is in early access

This looks great. It's clearly still in the early stages, but what's written so far seems to have a lot of really good advice about how to set up a Core Data stack. (Which, incidentally, is very different from where the default Xcode templates might lead you). I feel like I've already picked up some good ideas from these initial chapters.

Looking forward to the rest of the book! :)