Have you read the documentation? Have you looked at lebenty-zillion tutoriols (some bad) that illustrate the stupid "Hello World" apps? Please, read a little bit, at least. Your learning depends upon that. This forum (or any forum) may answer some questions, but it is not a substitute for learning the basics. That is YOUR job. If you don't wish to accept that mission, apply to a fast-food joint as a hamburger flipper, or make a cardboard sign and stand next to a freeway exit.