Goes into detail about how to setup your own, join existing networks, even using fairly inexpensive tooling for your own RTK adventures.
I am especially gratefy for his video about power measurements of microcontrollers. It's really common sense for everyone with a little bit of electronics background but I've seen so many people (some who should have known better) just sticking a multimeter onto it and calling it a day that someone really explaining patiently and in simple terms, why this often does not really work is a godsend.