This is the book I've been waiting for! I've been trying to learn about dragonflies for the past year and I found a very helpful guide with this book.
First, the inside cover has a quick identification table that helps you determine the family of dragonfly or damselfly right away. Then using the color coding in the book, you can flip right to the section for that family. If that's not enough, there is another page inside that steps you through how to make the identification. In other words, what you should look for first, then next, and so on.
There is also information on anatomy, behavior, life cycle, development, feeding habits and migration. And if you don't learn enough here, they've included a list of resources to learn more.
The illustrations are larger than some guides and very clear.
This easy to use guide includes "over 100 of the approximately 435 North American species"--some of the "most common, widespread and conspicuous," and does include representatives from each family.
It even suggests how best to spend your time in the field. So get your guide and get out and identify dragonflies.