PyGAD is a Python library designed to use genetic algorithms for optimization problems, including training machine learning models. Specifically, the pygad.torchga module facilitates training PyTorch models by treating the training process as an optimization problem where model parameters are represented as vectors, or chromosomes. This approach allows for the evolution of model parameters over generations to improve performance. The tutorial outlines steps for using PyGAD to train PyTorch models, including setting up a fitness function, creating a population of solutions, and running the genetic algorithm. Examples demonstrate how to apply this method to both regression and classification problems, showcasing the flexibility and potential benefits of integrating genetic algorithms with machine learning model training.