The latest macOS version is Monterey — here's how to check if you have it and how to upgrade

You can see if you're running the latest macOS version by clicking the Apple logo in the top-left corner, then selecting ...
CNET

Mac OS X 10.4.7 for Intel re-released; now posted -- how to determine if you have the old or new version

Apple has released a revised version of the Mac OS X 10.4.7 updater for Intel-based Macs due to the omission of some files related to OpenGL performance. A posting to the company's Security-Announce ...
9to5Mac

How to reset your MacBook or Mac desktop before selling or giving it away

If you’re ready to sell, trade in, or give away your Mac or wipe it for another reason, there are different steps to the process depending on what Mac you have and what version of macOS you’re on.
Macworld

Mac OS X Secrets

Macs have always been great networking computers–both the software and the hardware are a breeze to get up and running. But Mac OS X has brought some significant changes to Mac connectivity. In fact, ...