Thermodynamics classes, for students belonging to engineering careers I trained as an engineer, not as a teacher, and the fact that I needed help during my degree led me to visit a large number of teachers to address the different subjects of the degree, in which I had not been prepared in high school. Along that path I discovered the needs when it came to learning the topics. The transition from high school to university is a very big leap and the need for a private teacher as a guide often turns out to be indispensable. My teaching methodology is based on finding as many possible paths as necessary to solve a problem, whether physical, mathematical or chemical, in order to achieve the student's understanding. Likewise, the integration of knowledge, so as not to think of subjects as sciences separated from each other, but to apply what has been learned and manage to link them through the knowledge acquired in others, thus facilitating their understanding. My idea is not to impose a single way, or my way, but to make the student feel safe, by providing various tools that adapt to their understanding and prior knowledge, comprehension, and approach to topics, also incorporating new tools and resolution mechanisms. Teaching both in person and virtually is something that I have been doing for several years. Since I also speak English, I have the possibility of helping students from bilingual schools, or students from other non-Spanish speaking countries, with these same subjects (mathematics, physics, chemistry).