Here is the list of other useful resources that you might like to check. They are all pdf documents:
Excel Workbook - download a Workbook to learn/refresh your knowledge of Excel
SPSS Workbook - download a Workbook to learn/refresh your knowledge of SPSS
Maths refresher - download a Workbook to learn/refresh your knowledge of elementary (and more advanced if you want!) mathematics. The spreadsheet that goes with the refresher can be downloaded from here.