Router bits - Illustrations like this are easily accessible in your shop reference binder (every shop needs at least one!). Other ideas for binders: project plans, stain charts, glues and how to select the right one, paint chips & accompanying info from around the house, fastener charts, photos of projects from step 1 thru step . . ., etc.
Not sure what kind of router bit you need? We can help answer your questions or you can check out our helpful videos or articles on router bit types. http://www.rockler.com/power-tool-accessories/router-bits