Posts By: Gary Rosenzweig

When it is time to change your email address, there is a lot to consider. You'll need to notify people you correspond with, but also update a lot of online accounts that use that email address as an ID. The key is to continue to monitor your old email address for a while to make sure the transition is smooth.

The new Night Shift feature in iOS 9.3 changes the color of your iPad and iPhone's screen to fit studies that show that a warmer display will make it easier for some people to get to sleep. You can try Night Shift with your iOS device if you read in bed at night to see if it helps you.

If you connect to wi-fi network somewhere and wish to disconnect then you may be used to just turning off wi-fi on your Mac to do it. Then you need to remember to turn it on again after changing locations. Instead, hold the Option key down and click the wi-fi icon in the menu bar and look for the “Disconnect From” option under the current wi-fi network. This leaves wi-fi on so you’ll connect to your regular networks automatically later on. It also allows you to keep using location services even if you are not connected to a specific wi-fi network.

You can slow down a section of a recorded track in Garageband. You'll need to isolate the track in its own Garageband file and then set things up just right to slow down the track.

In OS X you can use Gatekeeper to protect your Mac from malicious software. Most users should have it set to only allow apps from the Mac App Store. When you do so, it is easy to allow other apps on a case-by-case basis, so even export users should consider this setting as the default.

For once the expectations for an Apple event seem to be pretty reasonable. No one is predicting outrageous new features for the iPhone, or a completely new product, or even a minor Mac mini update. So predicting what we are going to hear should be easy. Everyone seems to agree we will get a new low-end iPhone and a new 9.7-inch iPad.

If you want to grab a still image from a video, you can do it using the QuickTime Player. Just pause the video at the frame you want to capture and use Edit, Copy or Command+c to grab the image. Then paste it into an image editing app or use File, New From Clipboard in Preview and then File, Save to save it as a file.

You can add footnotes to your documents in Pages. You can set styles for both the note symbols and the footnotes themselves. Footnotes can be placed at the bottom of each page, or at the end of a section or the entire document. Pages takes care of the number references so you can add and remove them easily.

You can sign PDF documents in the Preview app and in Mail. You save your signature using either the trackpad or your Mac's camera. You can then insert that signature in any spot in the PDF. It then becomes a permanent part of that PDF just as if you had printed out the document, signed it, and then scanned it back in. You can do the same in Mail, but only the copy sent will contain the signature.

Rumors abound that the iPhone 7 will not have a headphone jack. Is so, how will we connect our earbuds or headphones? Is this a step forward, or an annoyance?

Clearing your website history in Safari on your Mac is easy. Just choose History, Clear History. This not only clears your list of visited websites, but also wipes out your cookies. That basically means you are logged out of every website you recently visited. But you can hold the option key down when choosing History, Clear History to keep the website data around. This is less disruptive, but still clears your history.

Besides the alternate calculator types or conversion functions in the Mac calculator app there are some advanced features that you may not know about. You can use copy and paste, the delete key, set a number of decimal places, and have your Mac speak the results. The most useful feature is the paper tape window where you can record your calculations.

You can create a ringtone for your iPhone or iPad from a song you own using iTunes and QuickTime Player. This works for iTunes purchases as well as songs obtained in other ways, but not for Apple Music songs. You can trim the song to a section you want to use as a ringtone and then use iTunes to transfer it to your iOS device.

In El Capitan you can double-click a window’s title bar to zoom. This means it will expand the window to its maximum size, or back to its original size the second time. But you can change this functionality so double-clicking a window’s title bar will minimize instead, shrinking down into the Dock. Just go to System Preferences, Dock, and set the “Double-click a window’s title bar to” option to which one you want. Or, uncheck that option and double-clicking a window’s title bar will do nothing.

The San Bernardino iPhone debate continues. Apple was on Capitol Hill this week fighting the FBI in their quest to have Apple build a custom OS that could get agents into the iPhone.

The Photos app uses the term Albums to refer to a grouping of photos that you create. But unlike physical photo albums, you do not create a copy of the photo each time you add it to an album. Only one copy of the photo exists in your library, even through you can place it in as many albums as you like.

You can set default ringtones and text tones on your iPhone. But you can also set each contact to use a specific ringtone or text tone so that you can identify the caller or message sender without looking at your phone.

Mac Numbers: Creating and Using Spreadsheets On Your Mac is a complete course with 36 lessons and 11 practical examples taking you from beginner to advanced level. It includes three and a half hours of video tutorials and 11 example files.

You can easily create a password-protected file that contains an image with Preview. Just open the image file with Preview and choose File, Export as PDF. In the Save dialog, click the Show Details button at the bottom and then check Encrypt and set a password. Now someone will need a PDF viewer, like Preview or Adobe Reader, plus the password to see the image.

If you are building a spreadsheet in Numbers it can be useful to have sample data to help construct your tables and get things right before you have real data to enter. You can use the RANDBETWEEN function to create random numbers. Then if you copy and paste correctly you can turn those formulas into static numbers that won't change.