If a teacher wants to check out a set of books for guided reading, he or she just takes the bag of books, grabs the label off of the book box, and places the label on a check-out chart that is located in the front of the book room. There are strips of velcro underneath each teacher's name. Right by the check out system, I also display a laminated sign for directions for book check-out.
The last step to keeping the book room organized and functioning is to have a system for what will happen once the books are returned. In the back of the book room, I keep three bins labeled with three different levels of books from the book room. The teachers return the set of bagged books to the appropriate bin, and a parent volunteer stops in several days a week to return the books to the shelf. Another great development is teachers put the guided reading plan they created and used while teaching the book during guided reading right in with the bag when they return the books. This gives the next teacher that uses that set of books a starting point when creating their guided reading lesson.
This system has worked great since the school year started, and I am glad that we took the time and effort to think through how the check-out and organization would work so that we're able to maintain this amazing guided reading resource for our school.