Collecting a bunch of links here that I have meant to record for a longer time.
https://kerkour.com/rust-combinators A good introduction and overview article about combinators and iterators in Rust. Especially if you're new to the language.
https://web.stanford.edu/class/cs25/ A Stanford class about Transformers (the neural network architecture). With an introduction to the architecture itself by Andrej Karpathy
https://www.cs.toronto.edu/~hinton/FFA13.pdf Link to the original forward-forward learning algorithm by Geoffrey Hinton. Could be accompanied by this Twitter thread (https://twitter.com/martin_gorner/status/1599755684941557761?s=20) and this implementation (https://github.com/mohammadpz/pytorch_forward_forward/blob/main/main.py) which I haven't yet at a close look at.