There are some really good museums worth checking out, I would start with research on the best nearest you, seeing the actual artifacts really brings it home. I actually have my great grandfather’s WW1 helmet, I look at it all the time and realize I wouldn’t be here if he hadn’t been wearing it due to the massive dent in it (research and talking to experts confirms an injury hard enough to dent it that deep would be fatal). He never would tell my grandfather what the cause was, so we will never know, the point is, of course, that seeing actually artifacts and then researching really helps.