Couple recommendations that are popular with people who've been managing for a while:

- Managing Humans by Michael Lopp

- The Managers Path by Camille Fournier

- Radical Candor by Kim Scott

I think the netflix culture deck is also helpful: https://igormroz.com/documents/netflix_culture.pdf

And if you want to peak at how other managers manage check this out: https://hackernoon.com/12-manager-readmes-from-silicon-valle...

Or check out this podcast on the topic: https://anchor.fm/soapbox/episodes/6-Melissa-and-Johnathan-N...