Glenn FleishmanSenior Contributor, Macworld

Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.

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Happy birthday to…who? How to purge your calendar of acquaintances’ natal days

For historic and syncing reasons, you may wind up with more birthdays listed as events than you want.

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Two Screen Time tips to keep kids from working around limits

Screen Time is a powerful tool for managing kids’ screen time, but a couple settings make a big difference.

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How to send messages to select iCloud accounts directly to the trash

You can effectively turn some addresses into bit buckets.

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How to search your music library in macOS Catalina’s Music app

Three buttons let you choose among collections to search, but Your Library should be one of them.

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How to create a backup strategy with terabytes of files

As we take ever more photos and shoot more video, we have to think of new ways to back the material up.

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How to remove your iCloud account and Apple ID from a transferred computer

Even when you think you’ve logged out and wiped things clean, there may still be a lingering trace.

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How to get certified for a hard drive you erased

Some organizations may require a report that spells out how a drive’s contents were deleted.

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How to switch up your Apple ID if you’re leaving an organization that needs account access

Especially with two-factor authentication, you need to plan before it’s too late.

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How to change your kid’s adult Apple ID account to a child account

If you inflated their age, you can deflate it, too.

A MacBook running macOS Catalina.

How to clone a macOS Catalina drive

Catalina shook up volume organization, but you can still make a restorable backup.

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Save iCloud storage costs with Family Sharing

The ability to pool certain account elements includes storage.

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How to use iCloud aliases to send and receive email

You can have up to three aliases that connect to your iCloud account.

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iOS: What to do if iCloud Photos uploads are paused due to a low battery, but you’re actually near a full charge

The sync service may have its own algorithm that lets it choose when to stop syncing photos and videos.

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How to switch the language and region used by your Mac

Depending on the languages you speak and country or region you’re familiar with, you may want to switch among options.

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How to use Apple ID to create passwords for your apps

Apple ID lets you create up to 25 app-specific passwords for third-party apps.