Actually VPN lets you to encrypt your public internet by creating a virtual tunnel that runs over the internet. This helps you to surf internet anonymously by protecting your online identity and keep your data secure from hackers. Therefore, with VPN you can access your personal data and even can do e-shopping without any second thought using an untrusted public network.
There are so many VPN services are available that provides you VPN connectivity via either VPN client that needs to be installed on your machine or a web app. VPN uses encryption technique for the connectivity purpose, once you log in to VPN service using your credentials, your machine and VPN server will verify the trusted keys, if succeeded your internet connection will be encrypted and you can enjoy the internet without any worry.
Besides internet privacy and data security, VPN also lets you to bypass all those sites that are blocked by your Internet Service Provider (ISP) and gives you ultra-freedom to enjoy top-notch services like Netflix and Hulu that are on-demand Internet streaming media services, but unfortunately only available in some countries, which is shame. Thus, VPN can be a great solution for your home as well as office use depending on your requirements and believe me best VPN providers are not hard to find as internet is full of valuable reviews.
Also check out:
How To: Make A VPN