VPN stands for Virtual Private Network.

It simply means browsing on the internet while your data or information you are browsing about is been secured from any external bodies or preventing hackers from gaining access to your data or websites history.

It is also a private network that extends across a public network or internet. As a user, you can send and receive data across shared or public networks

What are the uses of VPN then?

Accessing business networks from any place in the world: you can decide to connect with your appliances anywhere you are, to a business network; though you will be required to connect with security codes which was kept in VPN-only to ensure safety.
To hide your browsing data from ISP (internet service provider) and local users: Internet service providers like Glo, MTN and Airtel operators can spy on your browsing history and sure have access to your data. Since they log the data of your IP address. So VPN can stop them from spying on them and also those that connect to a public network (Wi-Fi) because Virtual Private Network protect your privacy on public unsecured Wi-Fi connection. As you may or may not know, users of this networks may spy on your browsing history.
To access blocked sites all over the world: VPN can bypass any restrictions to any site that is not available in your country. Have you seen instances like “This content is not available in your country”? Even some YouTube videos can be overcome with VPN.
To bypass internet censorship: some countries does not permit or restricts the use of certain type of website. Chine for example block access to some websites in their country. VPN can help you fix such challenges
To access home network from anywhere : if you have private files in your home network, you can setup home network VPN to access the network anywhere you are
To download files: for those that like to live stream and also download files from restricted sites. VPN is important for use.
There are different VPN available for different operating systems, mobiles and desktops. There are paid ones as well as free ones you can use

links here to download free VPN and learn the setup steps : http://www.informationsecret.com/what-really-is-vpn/

V