While I can tell you who Miss Marple or Brother Cadfael is and I will even anonymously admit that I have a small crush on Hercule Poirot, I know very little about mystery genre books. Given the popularity of mystery novels, this is a bit of a liability for a librarian.
Luckily, a librarian is not required to know everything, they only need to know how to find anything! Here is a list of online resources that have helped me learn about the mystery genre. I hope you enjoy them too!