The latest Mac OS is 10.15.0 (Catalina), released Monday, October 7th, 2019. This is a significant update and you should be sure that your apps are ready for it. I recommend waiting for 10.15.2 before upgrading. See this article for information about compatibility with 10.15.
macOS Catalina (10.15) requires 64-bit apps. Here's a quick way to check your apps and get a list of those that are not 64-bit.
It's great that you set up a Time Machine backup. But is it working? Find out now. Here are two ways to check.
Here's how to fix the "error -9923" issue (an error occurred when communicating with the scaanner). It takes just a few moments, and it works.
Here's how you check your Apple laptop's battery condition. Works for MacBook Air, MacBook Pro, and MacBook. Easiest thing ever.
Do you miss hearing the volume get louder and softer as you tap "Volume Up" and "Volume Down" buttons? I did too. Here's how to get that back.
Hold the Option key while tapping volume up, volume down, or Mute on the keyboard to quickly access the Sound preferences.
Hold the Option key while tapping the bright/dim buttons on the keyboard and the Displays preference pane pops up. So cool.
Knowing something about your WiFi connection can help you to trouble-shoot. Here's how you find out a bunch of information, all with a click.