O’Reilly is the best programming book publisher, hands down. I have a dozen O’Reilly titles on my shelf, all with the famous engraved animal covers, and I use them regularly. I appreciate that the O’Reilly team sees the potential for an ActivityPub book. I have had a great experience with the editors so far.
I’ll update my progress here. I have a pretty tight schedule, but I’ve rearranged some of my commitments like graduate school to accommodate the work. (I’ll be getting credits from Georgia Tech towards my CS degree for doing this book — a nice bonus!) This is the first book I’ve written, and it’s going to require working code for examples, so there will be a lot of learning and work to do. But I’m confident this will be a step forward.