The R project website gives a good overview of books related to R. The list of books is also available in bibtex format (click here). On the R project website there are also other publications and resources listed which are not books (click here).
Personally, I started learning R through Michael Crawley’s book “Statistics: An Introduction using R” (Wiley, 2005; ISBN 0-470-02297-3). I found it very useful to get started on data analysis with R.
“The R Book” (Wiley, 2007; ISBN 978-0-470-51024-7) published by the same author is a more comprehensive work. Both text books still require you to read up on the more specialist methods of your field, but they provide a good base (I don’t get promotions by the way
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