Having opened SPSS you will get a dialogue box which you can cancel the first time you enter SPSS. Enlarge the window. SPSS is like a spreadsheet but it does not update calculations, tables or charts if you change the data. At the top of the screen are a series of menus which can be used to instruct SPSS to do something. SPSS uses 2 windows: The Data Editor, which is what you are looking at and which has 2 tabs at the bottom, and the Viewer. The Viewer is not visible yet, but opens automatically as soon as you open a file or run.
