pdf package help files

Newbie here...just learning

Do most packages come with pdf versions of the help files ? If yes, how to I
access the entire pdf file to be able to print it ? Is there a standard
command for that ?

No, the pdf version is not normally installed.  If you want to see the 
same content on a locally installed package, run

help_start()

then browse to the package.  The pdf files are just concatenated 
versions of all the help pages shown in that index.

You can produce the pdf using

R CMD Rd2dvi --pdf foo

where foo is a directory holding the source code to the package. 
Alternatively, as others have suggested, just look at the PDF on CRAN.

Duncan Murdoch