Just about every Windows application works with documents, which you will create, open and save at various stages. These three functions have associated keyboard shortcuts that work with most if not all the applications that you use regularly. I use the word document here to refer to anything that can be created or edited with software, whether that is a piece of music, an image or some other project.New documentTo create a new document (or in the case of web browsers - to open a new window) hold down the Ctrl key and press N. In some programs you may be asked whether you want to save your current work, this is because they only work with one document at a time.Open documentTo toggle the 'Open File' dialogue hold down the Ctrl key and press O. As with creating a new document, you may be asked...