[lanstin]

And Wikipedia is particularly bad for this. It is a good reference for things I already learned, but for learning, if I am not able to get to a professor, I find math/stack overflow to have many more examples and explanations, and sometimes for an overview YouTube lectures. And really for concrete things like polynomial rings over R, I often found starting up Mathematica and just playing around with some computation is sometimes useful. (Forget about p-adic things tho).

I sometimes think it would be good to rename some of the things that have historical names to mnemonics more descriptive than a proper name. But that would be difficult.