Rands In Repose
It was Piet Jaspers who introduced me to Michael Lopp's writing at Rands In Repose.
I've been an avid reader ever since. Michael writes about technical leadership. He gives tons of insights and advice of how humans work and act in a technological environment.
One of the first essays that I immediately took to action was on how to organize 1:1s. I still use his template, and everybody I introduce this template to gives very enthusiastic feedback.
Recommended with my whole heart !