Dive into the second part of a Halloween-themed machine learning tutorial where Gant Laborde demonstrates how to use face-api.js, a TensorFlow-powered facial recognition library, to add spooky masks to photos. Learn to implement facial recognition, overlay masks, adjust head positions, and work with multiple images. Explore concepts like the Pythagorean theorem and angle calculations for precise mask placement. Access the demo, repository, and additional resources to enhance your understanding of machine learning applications in web development.