For my part, with over 15 years of piano behind me, and the desire to put me on the guitar, I started by buying an ultra boring method, and especially complicated (and I mastered music theory, has excelente musical ear) ... Consequence: I had handed in his beautiful guitar cases and there was no hit for almost 3 years ... telling me that this still poorly tuned instrument was intractable ... And then there was one week I offered this method and MIRACLE: from day one plays 1 see 2 pieces. Learning agreements is ultra simple, 3 by 3 and 2 by 2. Choose also because they go well together and allow to scratch a little melody immediately. Tonight, I even played lullabies p'tites my children ... In short, it is a simple and effective method where everyone will find what he needs: just knowing chain agreements, learn music theory, grant and repair its instrument etc ...