Bring some color back to your Mac! If the Close, Minimize, and Zoom buttons aren't red, yellow, and green, check the System Preferences.
Did your Mac’s red, yellow, and green buttons change to gray?
Minimize a Mac window by double-clicking its title bar
Minimize a window with a simple double-click in the title bar. It's easier to click the title bar twice than to click the yellow button once, because the target is so much bigger.
If you can print it, you can turn it into a PDF
Mac users, here's how you create a PDF from any printable document. It's built into the system-- no need to install anything!
Add the Shift key to go the other way
In a spreadsheet, tabbing goes forward... but Shift-tabbing goes backward! Also works in dialog boxes and web forms.
How to find your Mac’s serial number the easy way
There's a hard way, and an easy way, to find your Mac's serial number. This is the easy way.
How to find your Mac’s serial number the hard way
The iMac's serial number is printed on the underside of its foot. It's in tiny type, but it's there.
Toggle between normal view and inverted view
If your Mac's screen is white text on black, instead of black text on white, you may be in "Inverted" screen mode. Here's how you toggle that on and off.
Adjust the View Options for Finder windows
The Mac's Finder windows have options, on a per-window basis. Make bigger icons for some windows, show previews in some, etc.
Buy refurbished Macs from the Apple Store and save 20%
Save a bunch of money and get a genuine Apple product, with a genuine Apple warranty, by shopping online at the Apple Refurbished Store.
The Mac’s System Preferences has a Search box
Quickly find the proper item in System Preferences, by searching. There's a reason they put that "Search" box up there-- try using it! Great for new Mac users.