
* Fred Brooks - Design Of Design
* Fred Brooks - The Mythical Man month
* Eric J. Evans - Domain Driven Design
* Design Patterns: Elements of Reusable Object-Oriented Software
* Kent Beck - Extreme Programming Explained
* Kent Beck - Planning Extreme Programming
* Michael C. Feathers - Working Effectively with Legacy Code
* Daniel Kahneman - Thinking, Fast and Slow
[EDIT] Correct the author for legacy code
"The Mom Test" by Rob Fitzpatrick will teach you how to figure out what your customers really want, because it is almost certainly not what they are asking for.
"How to Make Sense of Any Mess" by Abby Covert. How to organize and present information.
"To Sell is Human" by Dan Pink. This is how you should look at sales and marketing.
Assuming you are going to be building software:
"Seductive Interaction Design" by Stephen P. Anderson.
"Planning Extreme Programming" and "Extreme Programming Explained" are must-reads for working with software teams.
I've worn both product and engineer hats on my path to being a sort of rentable CTO, and am always happy to help out people that are getting started as a PM -- email is in the profile.
Good luck!
1996. Smalltalk Best Practice Patterns. Prentice Hall. (ISBN 978-0134769042)
1996. Kent Beck's Guide to Better Smalltalk : A Sorted Collection. Cambridge University Press. (ISBN 978-0521644372)
1999. Extreme Programming Explained: Embrace Change. Addison-Wesley. Winner of the Jolt Productivity Award. (ISBN 978-0321278654)
2000. Planning Extreme Programming. With Martin Fowler. Addison-Wesley. (ISBN 978-0201710915)
2002. Test-Driven Development: By Example. Addison-Wesley. Winner of the Jolt Productivity Award. (ISBN 978-0321146533)
2003. Contributing to Eclipse: Principles, Patterns, and Plugins. With Erich Gamma. Addison-Wesley. (ISBN 978-0321205759)
2004. JUnit Pocket Guide. O'Reilly. (ISBN 978-0596007430)
2004. Extreme Programming Explained: Embrace Change, 2nd Edition. With Cynthia Andres. Addison-Wesley. Completely rewritten. (ISBN 978-0201616415)
2008. Implementation Patterns. Addison-Wesley. (ISBN 978-0321413093)
>> Selected papers
1987. "Using Pattern Languages for Object-Oriented Programs". With Ward Cunningham. OOPSLA'87.
1989. "A Laboratory For Teaching Object-Oriented Thinking". With Ward Cunningham. OOPSLA'89.
1989. "Simple Smalltalk Testing: With Patterns". SUnit framework, origin of xUnit frameworks.