If you use Tables in your InDesign document, selecting individual cells with the mouse can make your fingers sore. Instead, use the Tab and/or Arrow keys to move between them. Maybe you already knew that. But did you know that you can click the cell you wish to work with and hit the ESC key to select the entire cell (perhaps to fill the cell with a color) and hit ESC a second time to select the content inside the cell (to change the font, for example).