Well, often when you install a program, it has the option to create shortcut to desktop for you to choose. If it doesnt automatically create shortcut, you can manually create one by go to the application directory and right click, choose new, create shortcut. It will create on in desktop. But if you want to create shortcut in start screen, you should choose pin to start. Unlike windows 8, windows 8.1 wont create shortcut in start screen automatically, so you have to do it by yourself