Run Sample R (Linux)

Hi, all
How do I run sample R (Linux). I open R, find a prompt an now what?
  

Start by reading the "Introduction to R" manual. It is probably 
available somewhere in your installation (different linux versions have 
it in different places), or from
http://cran.r-project.org/manuals.html

In particular, run the example session in Appendix A.