Lightroom has an extensive set of shortcuts that aren’t too difficult to learn. Adobe added an extra feature that makes using shortcuts a must. In any of the modules – Library, Develop, Slideshow, Print or Web, press the Help, Module Name Shortcuts, menu item and get a quick popup window with categorized shortcuts for the module you are in. Pressing escape or enter will cause the window to disappear.
It has never been so easy to find shortcuts. By making this easy, learning them is a cinch and they will become second nature in no time.