Remember when phonebooks the size of Manhattan landed on your doorstep? Those days are long gone, so how do you actually look up someone's phone number now? It's even trickier than you may think, especially finding cellphone numbers. We're here to help with four smart ways to find anyone's number online.

To save your eyes from strain while you watch YouTube videos, try the Dark theme. Tap your profile picture/icon and go to Settings > Appearance to choose from Dark theme, Light theme, or let YouTube default to your device’s theme. Dark mode may make it easier to spot problems with your monitor. Tap or click here to learn more about dead pixels and how to fix them.

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Low-quality pictures can tank your social media presence. That's especially true for image-based Instagram. Luckily, there's a quick and easy way to boost the appearance of your social media posts. Just follow these steps.

Master all things Microsoft with Kim's Windows newsletter. Free downloads, update news, pro tips and more, delivered weekly.

The more we rely on our devices for work, school and our personal lives, the more we have to lose. Whether it’s bank accounts, personal data, photos, conversations — there’s just so much to preserve and protect. That’s why I recommend TotalAV’s industry-leading security suite. It’s easy to use and offers the best protection in the business. In fact, they’ve received the renowned VB100 award for detecting more than 99% of malware samples for the last three years in a row.

Not only do you get continuous protection from the latest threats, their AI driven service, WebShield, blocks dangerous websites automatically, stopping threats before they reach you. Plus you can subscribe to data breach alerts and clear out old files with the Junk Cleaner.

Earbuds are a great way to keep your hands free while listening to your favorite music and podcasts. But after just a few uses, they can quickly rack up grime, either from earwax or dirt. Luckily, we found a few tips for cleaning up all types of wireless earbuds.

Excel has been around since 1985, but it's still a mystery to some people. It can be frustrating or downright impossible to use if you don't quite know what you're doing. We pulled together a few smart resources that can help.

Get Apple tips, tricks and updates to your inbox twice a week. Coming up soon: How to hide files and folders on your Mac. Handy!

Catch up with Kim's national radio game show sensation, Brand New or Not True. Kim introduces three products: One is brand new, and the other two are totally fake. This week, Kim attempts to trick Katrina in Iowa City, Iowa. Will Kim be able to fool her or will she come out the winner? You can play along while you watch but remember, no cheating!