I asked myself what goes inside a commit, how git structures [e.g. connects different commits] together, why can't I tamper a commit, why are git histories tamp

I asked myself what goes inside a commit, how git structures [e.g. connects different commits] together, why can't I tamper a commit, why are git histories tamper proof; I asked questions about what happens to the structures when I performed daily operations [fetch, merge, checkout, push -f etc.]. When I wasn't understanding merge conflicts I taught myself what git tries to do and contemplated over why you need three-way merge [e.g. instead of two way]. Some of this I was able to figure out about thinking through the problem, considering alternatives and some had to be done through reading. My approach to learning is not so much "bottom up" [e.g. I can't just read a book from chapter 1, or some website that claims to explain everything].