The Option-Drag technique works all over the place. It's one of the handiest Mac things to know. It lets you make copies of things, rather than move them.
Image dimensions are important: hi-res for printing, low-res for online viewing, etc. Quickly get pixel dimensions of images using these Finder tips.
Rotate pictures 90 degrees counter-clockwise in iPhoto, Photos, and Preview. If you want to rotate the other direction, hold the Option key.
The Mac's Contacts app reveals the Groups a contact is in, at the press of a key. Of course it's the Option key. This will help you one day.
Close all of your open Finder windows with a keystroke. You know about Command-W; try adding the Option key. Or, Option-click a Close button.
Adware and malware take over your searches, spy on your browsing, and slow down your Mac. Remove it with Malwarebytes for the Mac. Here's how.
Hold the Option key while clicking on the Battery Status menu on your Mac laptop and find out whether your battery is in good shape or not.
Hold the Option key, then click on the WiFi menu to see some interesting stuff about your network. Handy for trouble-shooting. Try it!
Apple's offering discounts on Mac and iPads for college students, along with significant savings on Beats headphones. Here are the details.The savings are big enough to make the headphones free.