Can you get the IP address of a laptop and what information does it show?

I was wondering if you could pick up the ip address of my laptop and what information does it show? also even if i use it in public library's with a wireless connection thank you.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).