If you are interested in knowing how Stable Diffusion generates amazing AI arts, but are put off by the steep technical details,
This illustrated guide from Jay Alammar should help you, https://jalammar.github.io/illustrated-stable-diffusion/.
The guide helpfully breaks down the model into components and substitutes complex equations with simple flowcharts.
P/S: I also highly recommend his illustrated guide on Transformers (https://jalammar.github.io/illustrated-transformer/), which explains Transformers really well.