R comes with extensive documentation. The simplest is to put a question mark ("?") and immediately after the question mark, type the topic on which you seek help. The other alternatives are listed above. We always encourage that you read the "Introduction to R", and the other R documentations that come with it, immediately after installing R, before first using it. To do it, type "help.start()", and it will fire up a web browser and post the tutorial. This is the best way to start using R. If all else fails, try posting a note or question to the mailing list.