If you're like me, VPNs are confusing. They protect me by hiding my IP address from prying eyes, but also change the way I browse and not always in a good way. I tried one which made it impossible to send Outlook emails. I had to turn it off every time I wanted to send.
But, everyone needs one these days. Some are built into browsers. Others, you buy as downloadable software. For those who received a year subscription to a VPN for a holiday gift, this article from the Ask a Tech Teacher crew will give you a quick understanding of what's in your future:

What are VPNs and How Do They Work?
If you've heard the term VPN, wondered what it meant, or noticed that people were using it to stay secure online, you're in the right place. This blog post will explain exactly what a Virtual Private Network (VPN) is, how it works, and why some people prefer using it for their digital security needs. By the end of this article, you'll have a working knowledge of VPNs.
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