Open & Free courses are freely available online courses and course materials that enact instruction for an entire course in an online format. Couses on Statistics (including R), Biology, Chemistry, Empirical Research Methods and several other. VERY GOOD!
R is a free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS. To download R, please choose your preferred CRAN mirror.
"GGobi is an open source visualization program for exploring high-dimensional data. It provides highly dynamic and interactive graphics such as tours, as well as familiar graphics such as the scatterplot, barchart and parallel coordinates plots."