In 1942 Nicola began teaching in Pro-Arte Musical in substitution of his mother Clara Romero. In 1948 he occupied a position as auxiliary professor at the Conservatorio Municipal de La Habana, until 1951, when he was appointed as titular professor. From then on, he devoted himself entirely to teaching, assisted by other dedicated collaborators, such as professors
Marta Cuervo,
Clara (Cuqui) Nicola (his own sister) and Marianela Bonet. At that time, Nicola proceeded to restructure his mother's method and also added much of his own. He established the basis for a comprehensive guitar didactical system that, including the contribution of many other guitarists, professors and composers, was going to be applied to the academic formation of several generations of Cuban guitarists. ==Awards and recognitions==