It does not need any introduction to economists/statisticians/etc… however, I find necessary to spend some words and space on it too, since in this blog I have been widely speaking of everything an economist should have in his backpack (LaTex, and Stata, but also WXmaxima and Graph -for those who, like me, would love to get some help when doing TA in math for economist)
This is a very useful package for R, which can help you while you are still a beginner:
how to install it?
but what is this?
John Fox (2005), The R Commander: A Basic-Statistics Graphical User Interface to R, Journal of Statistical Software, 14, No. 9.