I am I5 and am aspiring to become a football coach so although I did`nt maybe need such a tactical book,at this age, I found this book interesting,informative and such that I learnt about different systems and continetal styles.(In which this had a chapter.) I did have some stumbling points with the writer when he wrote about a sweeper in a back four as I would regard a back four as quite flat. eg: Arsenal ,Adams and the offside trap of the 90`s. The writer Jens Bangsbo ,who is now at Juventus as assistant manager, details famous formations from past Juve and Barca sides to describe particular systems in more detail for the reader. In conclusion this is a book which can educate the reader about different systems and one that describes the defence, midfield and attack. Not a wasted buy and as one of my first coaching books it is one I hold in high regard.