GitHub - LappleApple/awesome-leading-and-managing: Awesome List of resources on leading people and being a manager. Geared toward tech, but potentially useful to anyone.
I'm consistently surprised by how the single act of doing this as an eng manager or product manager makes incredible waves:
Send an email explaining what your team did the past 1-2 weeks, what your plans are for the next period, blockers & lessons learned.
Every. Single. Time.