Make sure you can surf safely
In a nutshell, a VPN establishes a secure, encrypted connection between your device and a private server, hiding your traffic from being seen by others. Of course, the VPN itself can still see your traffic, which is why you should choose a VPN from a company you trust. (A good rule of thumb is to avoid free VPNs, because if they’re not charging you a fee, they may be monetizing in some less desirable way.) In addition, law enforcement can get its hands on your information through the VPN company. However, for the most part, a VPN offers you a way to hide your online activity from others.
Source: How to set up a VPN