Trust covers a lot of ground well in very few words and with limited examples. From Game Theory, the book explores themes around the well-known Prisoner's Dilemma problem (if neither prisoner tells on the other, both do well; if only one tells, that prisoner has an advantage; if both tell, they are worse off than by having both remain silent), the informal truces that occurred along the front lines of World War One's trench warfare, observations about behavior in an altruism game, Christianity, and discussions of national trust and performance. For contrast, discussions of animal behavior and various other writings on the subject are included.
There are no panaceas and few conclusions. This book will primarily appeal to you if you want to learn about what is already known and would then like to pose and explore new questions.
The writing level is perfect for someone taking an introductory college course on the subject. As a result, those with a casual interest in the subject will rewarded without too much strain from their reading.
As an extension to the book's subject, I suggest that you also read Crowdsourcing: Why the Power of the Crowd Is Driving the Future of Business and Groundswell: Winning in a World Transformed by Social Technologies to get a sense of what can be done with more cooperation based on trust.
Enjoy!