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macOS User Guide
- Welcome
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- Change System Preferences
- Change your desktop picture
- Add your email and other accounts
- Use a screen saver
- Change the picture for you or others in apps
- Set up other users on your Mac
- Set up Screen Time for yourself
- Change the system language
- Make it easier to see what’s on the screen
- Use accessibility features
- Run Windows on your Mac
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- Use Continuity across your devices
- Stream audio and video with AirPlay
- Use your iPad as a second display
- Hand off between devices
- Insert photos and documents from iPhone or iPad
- Insert sketches from iPhone or iPad
- Copy and paste between devices
- Use Apple Watch to unlock your Mac
- Make and receive phone calls on your Mac
- Control accessories in your home
- Send files between devices with AirDrop
- Use AirPods with your Mac
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- Manage cookies and other website data in Safari
- Use Private Browsing in Safari
- View privacy reports in Safari
- Understand passwords
- Reset your Mac login password
- Use keychains to store passwords
- Set up your Mac to be secure
- Guard your privacy
- Use Sign in with Apple for apps and websites
- Protect your Mac from malware
- Control access to your camera
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
malware
Malware is malicious software that includes viruses, worms, trojan horses, and other programs that can harm your Mac or your privacy. Malware can unintentionally be installed when you open attachments in email messages and download items from websites.
Some malware is simply annoying. More often, its intent is to control your Mac to collect personal and financial information, host illegal content, send spam, or harm other computers on the network.
Avoid opening or downloading items from email messages and websites unless you’re certain that they come from a legitimate, trusted source. If you’re uncertain about the source, delete the item. You can always get it again later, after you make sure it isn’t malware.
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