I am well aware of how に works compared to で and how to use it in various situations. I still have trouble with a few uses that keep popping up, as they don't seem to gel with my current ...
This may be slightly multifaceted because I have a larger question regarding で that is contextualized by a smaller one. It is improper to put で before です or だ right. If someone asks 何で来ましたか (How did ...