I would focus on rabbit genetics--I found most of my rabbit genetics online for free. You need the most basic understanding of mendelian genetics for most rabbit color genetics. There are cases of straight dominant and recessive genes like the B gene and then there are cases of incomplete dominance (A and C genes) and then poorly understood "red factors" that just need more study.
In my real life my degree is in molecular biology which basically means the chemistry and mechanics of DNA, genetics, and inheritance, though I am now working in immunology. I know a bit more about genetics than any reasonable human should want or need to know. You do NOT need to be an actual scientist to understand rabbit coat colors. But stuff like this is the fun gateway that leads many of us onward to advanced degrees.
I will try to find a list of resources to get you started and drop them here. I am good at finding them because I know the search terms that get the technical stuff, not just the show rabbit "what color is this kit" photos. Read a few of them and you will be able to chase down any further info you need just by mimicking their vocabulary.