Totally agree on Manager Tools. Great stuff.

The best book on the topic for me was peopleware [1].

Radical candor [2] was something I started but only got to the first 50 pages. Was also good.

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[1] https://www.amazon.de/Peopleware-Productive-Projects-Teams-3...

[2] https://www.amazon.de/-/en/Kim-Scott/dp/1529038340/ref=mp_s_...