Data exploration

Data exploration in Unix.

But a few days later, the O'Reilly "Try R" class at CodeSchool was posted on HNN and prompted a rich outpouring of data science linking (and book recommendations, too).  MIT OpenCourseWare statistics class, and an online book on statistics and R, stand out.  Also the recommendation not to learn R without a simultaneous good grounding in statistics itself, because R is first and foremost a statistics platform.