R Tutorials

The following resources helped me in having a good R programming foundation.

Cook book for R

http://www.cookbook-r.com/

R Training Video

https://www.youtube.com/watch?v=iffR3fWv4xw&list=PLOU2XLYxmsIK9qQfztXeybpHvru-TrqAP&index=1&noredirect=1

Quick R:-
http://www.statmethods.net/

A tutorial to perform basic operations with spatial data in R, such as importing and exporting data (both vectorial and raster), plotting, analysing and making maps:

http://pakillo.github.io/R-GIS-tutorial/#intro

Many tutorials for using ggplot2 and Lattice

 http://learnr.wordpress.com/tag/ggplot2/

I am sure the above will help you the way it helped me in learning R

Enjoy your day folks...