UCLA’s Statistical Computing
Contains tutorials, computing examples, statistical resources and data on all major statistical packages including SPSS, STATA, SAS, LaTeX and R. For every package the site includes a starter kit, analysis examples: Annotated, Textbook and Papers, learning modules and an extensive FAQ.
StatSoft - Electronic Statistics Textbook
The Electronic Textbook begins with an overview of the relevant elementary (pivotal) concepts and continues with a more in depth exploration of specific areas of statistics, organized by "modules," accessible by buttons, representing classes of analytic techniques. A glossary of statistical terms and a list of references for further study are included.
Internet resource for systematic cross-case analysis and small-n studies. The site contains a Best Practices page and a Software Review page, International Bibliographical Database, Working Papers and a FAQ.