Start the browser version of help.start(). Rossi's ' Making R Packages Under Windows: A Tutorial' (1/06) which in turns borrows very heavily from the standard work 'Writing R extensions' (available as a pdf from CRAN but also available as part of the R installation. This is a short guide summarizing my limited knowledge of how to make and install packages in R using a Mac. Making R packages for the Mac: A simplified guide