These 20 little pieces were not written as studies as such, like those of Sor, Villa-Lobos, or Brouwer, to mention a few. They are arranged progressively in order of difficulty, but are not intended to be a manual of technical formulas. They are intended for young guitarists who will become acquainted with some traditional Mexican rhythms and musical forms. They are written in different tonalities, to suggest as much as possible, the distinct ambience of these typical places in my country.