UCLA Institute for Digital Research and Education: http://www.ats.ucla.edu/stat/ My go-to site for stats help. Fantastic guides to doing anything in Stata, R, SPSS, SAS, annotated output, online versions of some of their most popular workshops, and more. I highly recommend the Regression, Logistic Regression, and Graphics in Stata workshops.
Princeton University’s Data and Statistical Services: http://dss.princeton.edu/cgi-bin/dataresources/guides.cgi has links to a lot of neatly organized data sets (great for searching though you’ll need to access them through your own library) and their Training resources page, http://dss.princeton.edu/training/, has introductory presentations on a wide range of techniques and tools for various computing platforms. (Predicted probabilities in logit and probit! Nice output tables using the outreg command! Merging and appending data sets!)
Statistics Learning Centre: https://www.youtube.com/user/CreativeHeuristics/videos Great series of videos on a wide range of topics, including questionnaire design, regression and other analysis in Excel, and many more
Stattrek.com: http://stattrek.com/ Great source for quick reference tables, random number generation, and basic information
Saylor Academy Econometrics: http://www.saylor.org/courses/econ203/ For those desiring more background on how these things work, a complete free course on econometrics. The Unit 2 material is a fantastic introduction to everything you need to know about the internal workings of regression, its assumptions, possible problems, and available solutions.
Econometrics Academy: https://www.youtube.com/user/econometricsacademy Great lectures on wide range of basic and intermediate techniques, including probit and logit, along with tutorials for Stata, SPSS, and R.