Screen Captures
If you need to take a screen shot — and in my 10 years as a trainer I’ve had to take LOTS of them — here’s a nifty keyboard shortcut.
Press Shift-Command-Spacebar-4, which is a bit ackward (I had to use both hands) and your cursor changes into a crosshair (sometimes it changes into a camera icon). Just click and drag a bounding box around what you want to capture and release the mouse button to take the picture, which shows up on your dekstop as Picture 1 (or 2 or 3 depending on how many pictures you take).

