Lately, I was subscribed to many software-programming-related newsletters on my email.
- NGINX Newsletter
- Grafana Newsletter
- nixCraft Linux & Unix Sysadmin/DevOps Tutorial Newsletter
- Bill Gates (via the Gates Notes)
- Linux Handbook
- Linux Foundation
- Red Hat Developer and so on
Some companies like NGINX (F5) gave free new great ebooks and even swags* to their loyal newsletter subscriber.
Or maybe new insights/knowledge/tutorials from personal blogs like 5 great books for the summer by Bill Gates recommendation on his Gates Notes.
a free programming ebook like "The Go Handbook" from @flaviocopes.