Statistics e-book with accompanying videos. Developed at Rice University, University of Houston and Tufts.

Created by the statistics department at the University of Alabama in Huntsville. Contains interactive applets that demonstrate different statistical concepts through graphical simulations.

Video tutorials cover several topics in probability and statistics ranging from basic probability to regressions and other inferential statistical methods. Has an active user community of students that often discuss statistics problems.

Introductory statistics from UCLA's statistics department.

A nice reference sheet created by Dr. Karen Young at the University of Surrey.

Video tutorials on descriptive statistics, probability, distributions, estimation, hypothesis testing, survey sampling and some basic inferential statistics. Also contains some helpful, simple web-based tools that demonstrate different sampling distributions.

Good resource from the University of Bristol for learning modeling techniques.