Howe do i turn off the internet ?

well, I guess you can go to all the internet providers in your area and destroy their servers. but I'm sure they'll have thing up and running again in a couple of days so unless you bomb every internet provider building in the area, there's not much you can do. but to turn it off in your house, just turn off the router, or unplug the ethernet cable. or if it's a laptop with built in wifi, you can turn off the wifi by flipping the switch or pressing ctrl f8. or simply get rid of the computers in your house.