This course focuses on explaining the functionality of the pyFIT3D routine package and the pyPipe3D pipeline, and their practical use in deriving spatially resolved properties of stellar populations (using the population synthesis method) and ionized gas in galaxies observed through integral field spectroscopy. This applies to both large surveys (e.g., CALIFA, MaNGA) and individual observations (WEAVE, MUSE). The course is predominantly practical, primarily aimed at young researchers and students with basic knowledge of the subject. A computer with Linux/Unix/Mac or similar operating system, with Python3 installed, is required, and preferably, the following package should be installed in advance: http://ifs.astroscu.unam.mx/pyPipe3D/