iPhone users may be interested to know that many popular O'Reilly Perl books are available for download via iTunes.

Titles available include:

• Perl Pocket Reference
• Perl Best Practices
• Perl Cookbook
• Perl Hacks
• Perl in a Nutshell

and several others.

Prices seem to range between $US3 to $US5, which is quite reasonable and affordable.

I have PBP now on my iPhone, and I've already found it useful for keeping myself "entertained" - whilst on an afternoon shopping expedition with my wife the other day ;)