The latest version (starting with SPSS 10) provides some very simple help in interpreting output through something called the "Results Coach". So if you're looking for elementary-level help in interpreting your SPSS output, here's how to get to the "Results Coach":
Naturally, you get only very simple explanations from the Results Coach, but often that's all you need! If you have more detailed questions that can not be answered through the SPSS Results Coach, try a very specific search on Altavista or Google. There is a tremendous amount of free statistical information available online (including entire textbooks!), but you'll need to know how to conduct a very precise search before finding the information you're looking for.
1 Results coach can only help you with tables, not charts/graphs/scatterplots/etc.
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