Quote:So far all I know about VPN is that it is a bit of software I can use to mask my location. Apparently it has more than one meeting.
this is only a secondary effect.
VPN is Virtual Private Network, a tunnel. Virtual private network - Wikipedia
VPN is basically an encrypted link between 2 computers or networks, encrypted means nobody can understand what is the data exchanged between both endpoints.
It look like: Your Computer <==> VPN <==> server
What is publicly sold as a VPN to mask your address is another thing: Computer <==> VPN <==> server <==> anonymiser service
The anonymiser service is the one pretending you are from another place.