Vpn used to change your location or your IP address. When you use VPN your computer or phone will search like is in other contry when vpn server is online. Your device will communicate only this server of vpn. Device gives orders what to do to VPN and vpn server works based on orders of you device.
You can use VPN to open pages that are forbidden in your contry.
There are three types of VPN
VPN softwares, this vpn softwares are free and paid software, you have to download and isntall this software and then open vpn software and start navigation from other countries. One of them isn Hotspot shleld.
Extensions of browsers
Another ways is by using extensions, in chrome, opera, of mozilla firefox.
Opera has a extension calle Opera VPN this is free and you can download in your andoid phone or windows mac etc, in android you have to download like software, but in windows, mac linux, you have to first download opera and then search and download extension of opera browser.
Chrome extensions
One of the best for chrome vpn is Hola VPN you can find id and download it for free in chrome store. After add it to chrome, you can select every contry you want to browse using vpn.Mozilla Firefox VPN
There are a lof of extensions but I am going to tell you 2 main extensions
Hoxx VPN you can easily download it and add it to mozilla extension, and other is ZEnMate vpn.
ZenMate vpn is very good and easy to use, you also can download it and isntallit for free.
By using online sites.
Another way is by using online sites like hiddemyass, but most of them are paid sites, you have to pay to browse with vpn.There is a simple way by changing proxy settings ip address but you have to find vpn servers address and you can change and put that ip address to your browser, click Ok and then your browser will stray working with vpn.
For more please watch video bellow