The Santos Y Mayor GSM 9B is a beginner guitar with a massive wooden top in 4/4 format. Due to the size of 4/4 the guitar is suitable for adults and children from 17 years. Choosing the right format is important, because then you simply take on the correct body position. A guitar with a solid wooden top sounds better as it gets older. This gives you more of the sound when you have the guitar longer in your possession. For novice guitarists, nylon strings play finer than steel strings. This is because as a beginner you do not have any calluses on your fingertips.