Suggestions for new Mac users

I'll say what others have said in a different way. Do not go looking for software to install. Only install applications that you absolutely need. Every application installed on a computer (with any OS) is a security, performance, and stability liability. Therefore, only install applications that you need and are well respected. And, uninstall any application that you no longer need or use.

My second recommendation is to learn to use the native features of the macOS. For example, learn to use Finder as it is, instead of downloading some unnecessary file manager application. Learn to use Spotlight's command-spacebar before installing some unnecessary application launcher. And finally, learn about macOS security and the benefits of Private Relay before installing an unnecessary VPN. This list goes on. I encourage you to have restraint whenever someone online tries to convince you that you need any type of additional utility to replace or improve upon what macOS gives you out of the box. Want a stable, secure, and well performing Mac -- keep it clean and minimal.

For some additional reading material.

Welcome to Mac mini Getting Started Guide - Apple Support

Customize your Mac with System Settings - Apple Support

Change Desktop & Dock settings on Mac - Apple Support

Customize the wallpaper on your Mac - Apple Support

Mac tips for Windows switchers - Apple Support

Is there something specific you'd like to know?

Mac User Guide - Apple Support

Don't install junk on your Mac.

No anti-virus, cleaning, optimizing, security or VPN software is needed.

Your Mac requires no third-party, always-on anti-virus software.

Apple has built XProtect anti-virus technology into macOS and keeps it updated regularly.

XProtect - Protecting against malware in macOS - Apple Support 

Apple Platform Security - Apple Support 

Apple Personal Safety User Guide - Apple Support

Never,, never install or run any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac.

The MacOS is very secure and does not need any of those types of apps. They actually coast the system performance and can mess it up.

Thank you for reaching out. 😉

In addition to the great advice from D.I. Johnson, I’d like to suggest the following:

Apple offers free workshops for a variety of subjects known as Today at Apple.

➢ Get Started: Mac. 

Good luck! 👋🏼😉

Smiliñ 😎 Brian

Never let the drive get more than 80% full. This applies to any computer.

If your drive is getting anywhere near 80% full and you don't want to delete anything, get yourself a plugin drive or drives.

Oh, yeah. Backup your Mac.

Back up your Mac with Time Machine - Apple Support

iCloud is integral to the Mac system, and folks often come in with odd preconceptions about it. See this:

Understanding iCloud Drive

I can't believe this hasn't already been shared:

Effective defenses against malware and other threats - Apple Community.

it's a long article, but worth your time to read every word.