I’m watching a tutorial and down bottom left there is a mouse symbol and a scrolling display of the commands that are being entered. How do I turn it on?
File / User Preferences / Addons. Under the 3D iew section enable the ‘Screencast Keys’ addon. Start it from the Properties panel (shortcut N) of the 3D View window
http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/3D_interaction/Screencast_Key_Status_Tool