VPN basics, without the jargon
Start here if you have never installed one.
One idea, three consequences. Picture a sealed tube running from your phone or laptop to a computer in another city. Whoever runs the Wi-Fi can see that the tube exists and cannot look inside. Websites at the far end meet that other computer and never your own address. Nearly all VPN basics follow from that: it protects you on Wi-Fi you do not control, it moves your apparent location, and it shifts trust from your provider to the VPN operator. It does not make you anonymous to a site you log in to. This VPN for beginners section keeps each answer short.
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Q&A for beginners
Q.What is a VPN in one sentence?
A.A sealed link between your device and a remote server, which then talks to the internet on your behalf.
Q.Do I need one at home?
A.Maybe not. On a home line you trust, with no need to appear elsewhere, it adds little. Cafes, campuses, hotels and trips are where it pays off.
Q.Does a VPN make me anonymous?
A.No. The Wi-Fi owner loses sight of you, and sites lose your address. The moment you log in somewhere, that site knows exactly who you are.
Q.Is a VPN legal in the US?
A.Yes. It is an ordinary security tool. The same laws apply to what you do through it.
Q.Will it slow my internet down?
A.A little, because traffic takes one extra hop. With a nearby location most people do not notice.
Q.Is a VPN the same as a proxy?
A.They are cousins. A proxy reroutes a single app and frequently leaves the traffic readable. A VPN wraps every app on the device in encryption.
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