A work of very very high quality that allowed me to understand how this "terrible beast" in a clear, concise and complete. The great talent of authors have managed to make me leap! I who hesitated to buy this kind of equipment, and even dreaded to approach me the day after my reading, I went to the concrete. All this without drama and without regret !!! A complete and very serious work, we feel that there has been a lot of work behind. The very clear and not at all boring !!!!!! Get started fear is that happiness!
