What is ip address for?

ip address is basically the address of your internet connection, like a=each and every house is registered with the government and the address is known,

likewise, your internet connection is registered with your ISP(internet service provider).

ip address can be either static or dynamic, like the Words suggest,

static ip address will remain the same whereas dynamic ips will change from time to time(each time you connect).

there are ways to change your ip address, which require software, but its only needed by hackers or crackers..... you wont be needing it.....