Thank you for this, I appreciate it. The Guide took a long time to write, around a year. It was the first ZeroMQ project where I merged all pull requests without code review. The results were amazing: most of the examples are now in many languages, a Rosetta stone of distributed programming. This was what convinced me that a "merge first, fix later" approach would work well more broadly (and it has).

I'm rewriting the Guide slowly, as the software has changed and we've found nicer, simpler ways to solve some of the harder problems.

There is a lot of new ZeroMQ-related material on my blog, at hintjens.com.