I love the idea of this book and think it is a concept well worth continued development. I do how ever wonder who the market are which the book is targeting. Other reveiws said it was good for themselves or their Dads.
For young men, I am not so sure. The cartoons are not that engaging the diagrams are not clear, (unless one knows what is being refered to), there are pictures of women in it when refering to issues that may affect either gender, (strange for a book about men), and there appears to be a prudishness about showing anything "rude".
I confess that I did get the book to work with young people and I feel that it will not be engaguing enough for this age group (16-25) as once opened it still looks very much like a bland health encyclopaedia.
The information is great, but a bit more colour on the page would go a long way.