My copy arrived yesterday. Wow -- it is comprehensive. Everything from the history to the biology of it (the old O-level biology cardiovascular & eyeball diagrams are included!). No colour pictures -- which is a shame as freediving is a very visually appealing sport

but lots of diagrams and black & white pictures.
It has way more information than I ever expected to want or need -- my interest being spearfishing rather than competitive freediving. However, they seem to have covered everything you are likely to want to know about freediving (although you will, for example, find more detailed & current info. on equipment on these forums). I guess I would have prefered something more concise but this is not really aimed at me. So far, the quality of the translation is unusually high -- it seems well executed and several doctors were involved in its production. I really like the Italian "flavour" of it -- a real novelty.
Chapter 6, 7 & 9 were a pleasant surprise -- they even cover my favourite topic (tides!

). Finning technique, rescue (but not CPR - prob. wise). Duck dive/spearo dive. Good stuff.
For spearfishing, maybe the various DVDs are the way to go (& the previously mentioned
books)? Although I love my
little Len Jones Spearfishing booklet (

must get it back -- out on loan at the moment).