We cannot talk about hyperfine interactions without discussing some properties of nuclei that go beyond the point charge. That’s what this first chapter will be about.
There are a few optional resources that can be useful. These are really optional resources: they do not belong to the core material of this course. Nevertheless, they might come in handy if you feel lost at some point due to a lack of background knowledge. Feel free to consult them when you need, but don’t feel bad about leaving them alone if you don’t need.
Feel free to suggest other background texts that can be added here.