SPSS essentials : managing and analyzing social sciences data / John T. Kulas, Jossey-Bass, 2009
SPSS is Statistical Package for the Social Sciences, a complex commercial app which now has a Windows GUI. “SPSS is among the most widely used programs for statistical analysis in social science. It is used by market researchers, health researchers, survey companies, government, education researchers, marketing organizations and others… GNU PSPP – PSPP is a free SPSS replacement.” — Wikipedia
This book is an introduction for users.