How to access blocked websites in your computer system? what is VPN?

If you are accessing internet, obviously you would  have taken connection from any ISP(internet service provider)like airtel, jio, bsnl, vodafone etc. For example,  if government has blocked any website may be due to copyright or some other issue, and you want to access that website. Your ISP put a blockage in your connection which unable your connection to reach that blocked website and generate an error. Now, if you want to access those websites you have to use VPN.
VPN stands for Virtual private network. This network will help you to access those websites which are declined by your computer. VPN  provide its  IP address to the blocked websites  by hiding your details to your ISP. But save your details in the database of VPS server only.

How VPN help you to access block websites?

Suppose google.com is blocked in your computer. But if you are using VPN and then visting google 's site, the site will open. Now , how this VPN works???  So when you searched google.com, your VPN  will automatically encrypt your keyword (google.com ) and make a tunnel in between the connection. so that your ISP help you to reach VPS Server and never know that you are accessing that blocked website. After setting  up an connection with VPS server,  your encrypted packet will open which was google.com and your VPS server will send request to google server to access that website. And then you can easily access google's website.

 How to generate  your VPN?

So you do not have to set up your own VPN. There are many websites who sell their VPN. They already have made VPS servers. VPN could be indian, canadian or from anywhere  you want to purchase. I always recommend you to buy paid VPN because those  are trusted websites. The companies which sell free VPN  may have  mallicious softwares, which sell your data to your ISP  and you won't be able to access that website .

VPN's were originally  used to add security and privacy to private and public networks to protect the sensitive data. But then, people used their mind to use this technology in different scenario.