If you need help with R, the following section gives you information about some people and places that will prove invaluable.
The following are the official sites:
Website of the R project and CRAN: http://www.r-project.org/
RStudio IDE: http://www.rstudio.com/ide/
Eclipse IDE: http://www.eclipse.org/
Emacs Speaks Statistics: http://ess.r-project.org/
Manual and documentation: http://www.r-project.org/
The following are some useful websites with articles and tutorials on the most important topics:
Graph Gallery: http://gallery.r-enthusiasts.com/
R Journal: http://journal.r-project.org/
Cookbook for R: http://www.cookbook-r.com/
The following are some community sites:
Official mailing list: http://www.r-project.org/mail.html
LinkedIn R group: http://www.linkedin.com/groups/R-Project-Statistical-Computing-77616?trk=myg_ugrp_ovr
Unofficial forums: http://stackoverflow.com/
For more Open Source information, follow Packt at http://twitter.com/#!/packtopensource.