Chapter 1: Resources
A very nice video showing the distinction between correlation and causation is available on youtube.
Many, many wacky examples of correlations which do not seem consistent with causation are illustrated here. For example, this one, showing the strong relationship between the number of people killed by venomous spiders and the number of letters in the winning word in the National Spelling Bee.
A wonderful xkcd comic on correlation vs. causation.
An introduction to using the free and powerful statistics package R is here in two parts: part 1 and part 2. These two parts are the beginning of a series of tutorials on learning the basics of R that will accompany this course.