Here is a question our techs often get asked:
If I connect to a Wi-Fi network that does not have a password, is there any way to still ensure my connection is secure?
If this already sounds like Greek to you, what we are talking about is connecting your computer or tablet to a Wi-Fi network in a public place. Some places like hotels may have a password or encryption key for you to gain secure access to their network. Other places, like many RV parks, have "open" networks. These networks are not encrypted or password protected. When joining them, in Windows 8 and 10 you may even get a warning message telling you that data you send over the connection could be accessed by others.
If you want to have extra protection on both secured and open networks, the best way to do this is with a VPN service.
But there are so many available (some pay, some free), how do you know which one is best? Check out this PC Magazine article which goes into more detail about what VPN services do, and which one may be the best for your needs.