He's quite possibly talking about the Lemay book, as I've seen it available as (scanned+ocred+formatted) on irc several times.

I bought it, and it is good, though I didn't spend more than the allotted time (as perl is my 3rd/4th language, I could jump the first few days quite quickly) It's not a replacement for the camel (which I have acquired later on), as it does not delve into OO or the other more advanced stuff very much. It's well-written, though, and clearly understandable.

Anyway, I meant to say, don't download the book, buy it, it's worth the money.