The  Mexican Numerical Relativity School aims to provide graduate students and postdocs with some of the tools needed to master and understand numerical relativity simulations. The series of lectures will cover the fundamentals of solving Einstein equations numerically in strongly gravitating/dynamical regimes. Emphasis will be on fundamentals to lay a solid foundation for venturing into Numerical Relativity. No prior exposure to numerical relativity is required, though basic familiarity with computational physics and general relativity would be desirable.