Links:
macOS
- Find out which macOS your Mac is using
- How to update the software on your Mac
- Wikipedia: macOS
- Wikipedia: macOS version history
- macOS Support
- Take a screenshot on your Mac e.g. Fullscreen: Shift + Command + 3
- Hardening macOS
- Back up your Mac
- Keychain Access User Guide
Devices:
- Identify your MacBook model
- Wikipedia: MacBook
Antivirus:
- Avast Security for Mac (Free)
- Malwarebytes for Mac (MBAM)
Related links:
- iOS
- Instant Messenging
- Mail