You asked some very silly questions which are only a research click away. We don't do hand-holding here, that's just how it is, there are too many other important things to focus on. You also get extremely defensive when people tell you this; if you don't have a thick skin, this isn't the place for you. If you're going to write a page and make several threads because some guy told you 'fuck off, handshake' this isn't the place for you.