More to explore:
Finance Accounting for Non-Financial Managers By Samuel Weaver and J. Fred Weston
One of the best project management books I've seen. Project management is all about tradeoffs. This book helps you find the best tradeoff for a number of common PM situations.
My favorite book for new managers. Covers all the basics and provides great examples of what to do and what not to do.
The 5 Love Languages is a must read! Can't speak for any of the other books on this list, but some do look interesting...
How to Win Friends and Influence People
Good to Great: Why Some Companies Make the Leap ... and Others Don't (2001), by Jim Collins
quiet strength by tony dungy