Learn to build and train a PyTorch neural network for image classification in this comprehensive tutorial video. Begin with a mental model of the training process, then dive into PyTorch imports and hyperparameter setup. Explore how to prepare training and test data using the FashionMNIST dataset. Create a neural network architecture using PyTorch's nn module, and understand loss functions, cross-entropy loss, and optimizers. Set up a complete training loop for forward and backward passes, achieving 85% test accuracy on FashionMNIST. Visualize the computation graph using pytorchviz, and learn how to save and load PyTorch models. Perfect for those with basic PyTorch knowledge looking to deepen their understanding of neural network training and implementation.