While in, Lightroom - by holding down cmd or ctrl and the forward slash key, you will bring up a list of the keyboard shortcuts for which ever Lightroom module you are in at the time, develop module=shortcut keys for the develop module etc. This is a nice way to learn the shortcuts you use as it saves rummaging through scraps of paper that you note them down on, and either loose or spend time reading through lists that are not written in any sort of order
