This book was nice, and the author is earnestly trying to build a commercial-usage community around Racket:
EDIT: Oh, but just getting started:
- How to Design Programs 2nd edition (new to programming or structured reasoning about programs)
- Racket Guide (new to Racket)
- Racket Docs (for reference)
The docs are pretty great, but IMO there’s an opportunity for people to blog about production use cases.
Also, I dream of something like R’s tidyverse being written for Racket... maybe by me, but ideally by someone smarter and better.