Like, when do they go to the synagogue, or what holidays are celebrated or left out and things of that nature.
I'm trying to make a character who's Reform Jewish but it's hard for me to find out the simple stuff.
answer: it would depend on your character. Reform Jews determine how observant we are. Some are barely observant, i.e. going to synagogue only a few times a year and not keeping kashrut. Others are very observant, i.e. celebrating Shabbat every week, keeping kashrut, saying the prayers three times a day in addition to the ones before and after meals, etc. (I am one of the later).