It's important to know when your Mac was last backed up. If it's too far back, there's probably a problem. Checking now gives you a chance to fix it.
When was your Mac most recently backed up?
Stuff the cat did: toggled VoiceOver so my Mac started talking
Your Mac can talk to you, telling you which button you're about to click, which menus are showing, and so on. Very handy if you can't see well, but very surprising to have it turned on by itself. Or by the cat.
Option-drag to resize Mac windows and graphic objects in two directions, keeping the center fixed
Resize Finder windows and graphic objects from the center by holding the Option key while you drag an edge or corner. Grow the item while keeping the item's center fixed.
Command-click a window’s title to show the document’s location
Here's how to know the location of an open document, all with a simple click. Actually, all with a simple Command-click. It's a great feature.
Hold the Command key down to drag things around in Mac app toolbars
Many Mac apps have toolbars-- Mail, Safari, Pages, Numbers, Keynote, and many more. The tools on such toolbars can be rearranged via Command-drag.
The public beta version of Mac OS X didn’t have an Apple menu
macOS has evolved quite a bit. The first version-- Mac OS X-- removed the Mac's Apple menu, something a lot of us were very comfy with.
Bring back the scroll bars
Scroll bars should show! They're important indicators of how much material remains unviewed. Apple turned them off; we're turning them back on.
Too many notifications on your Mac? Turn some off.
it's nice to be notified of important stuff but too much is too much! Here's how you customize Notifications, on an app by app basis.
Get the Save As… menu item back onto your Mac
Apple took away the Save As... menu item. That's too bad, because it's very handy. Actually it's still there, if you know how to bring it to the surface.
Check your Mac laptop’s battery condition
Your Mac laptop's battery is going to wear out one day. Here's how you can check on the condition of the battery today. Easy and informative.