Completely different methodological approach to everything that is in the genre, ... but ... what talent! Light but rich, concise but complete. The author shares his mastery and experience; because here we see and feel the practice field and the apparent simplicity of the examples proves expertise, synthesized the essential ...! Customer solutions we propose are already seeing amazed by so much creativity .... But we do not lure: the evidence of the proposed designs here, from a knowledge that the author acquired after arm by wear on the field, dreamers ... refrain ...! And thank you to Pearson for the seriousness of its editions ... ... heavy!