Book's I loved Reading
Inspired- Marty Cagan
Excellent book to learn how to scale a product tech organization in an optimum way.
Radical Candor: Kim Scott
Excellent book if you are first time manager and want to learn various technique with example to be a kick ass boss.
The Making of a Manager:Julie Zhuo
What to Do When Everyone Looks to You by Julie Zhuo. Excellent book to learn how to be a great lead and the what are the challenges you need to overcome when you suddenly embrace management role from being an individual contributor.