Introduction to Educational Research by Suter

Readingstats.com

HyperStat Online

Rice Virtual Lab

Places to get data: DASL (the Data and Story Library) , National Center for Education Statistics (NCES), The Interuniversity Consortium for Political and Social Research (ICPSR) ICPSR

Here is the link to PIAAC project http://www.oecd.org/skills/piaac/
For log-file data, you can find in https://piaac-logdata.tba-hosting.de/

Reporting Statistics in Psychology

Reporting Statistics in APA Style

Vassar Stats (Free Online Statistical Applets)

BrightStat (Free Online Statistical Software)

PSPP (a Free replacement for the proprietary program SPSS)

StatPlus:Mac LE (This handy add-on replaces Microsoft Analysis Toolpak in Excel 2011 for Mac.)

R (Free and powerful statistics software)

How to calcluate Effect Size (Cohen's d and Partial eta squared)