In the last five years moved from development, to leading the development team to more of a product management role. Fully agree with that DanielBMarkham it's "the people part of things is where you'll screw up", so I'd focus on communication and team-building as much as processes.

I've found a few books really useful:

* The Checklist Manifesto: How to Get Things Right (https://www.goodreads.com/book/show/6667514-the-checklist-ma...)

* Drive: The Surprising Truth About What Motivates Us (https://www.goodreads.com/book/show/6452796-drive)

* Making Ideas Happen: Overcoming the Obstacles Between Vision and Reality (https://www.goodreads.com/book/show/7696135-making-ideas-hap...)

* Delivering Happiness: A Path to Profits, Passion, and Purpose (https://www.goodreads.com/book/show/6828896-delivering-happi...)

* Rework (https://www.goodreads.com/book/show/6732019-rework)

These days I get the most value from articles and videos. Here is a list of my recommended articles on Medium, which might be useful - https://medium.com/@nickboyce/has-recommended. Some great stuff in the list recommended by ravivyas too.

Edit: Something else I have been experimenting with is buying executive summaries of major books, in order to familiarise myself with as many perspectives as possible.