I am like Nanners, I keep to a low residue diet for the most part. I do cheat once in a while and I pay for it, but sometimes it is just worth it.
I think keeping a food journal is a great idea so that you know what works for you and what doesn't, but keep in mind that it may change over time. So if a food bothers you now, you might want to try it again in a few months or next year to see how you do later. That is the weird thing about
this disease, things keep changing, just to make things more fun!
I know you are probably feeling overwhelmed with everything, but I have found a great resource on just plain basic diet info is "Cooking Well for the Unwell" by Eileen Behan. She is a dietitian and she has section in her book explaining all the different types of diets that sick people might get put on and the reasoning behind them. Clear liquids, Full liquids, Extra calories, Low residue, Soft diets, Low salt, ..... She then has recipes for each section. It is just a good reference for anyone trying to understand the needs of a sick body and how to feed it properly. I actually have 2 copies because I was always loaning it out to friends who had sick loved ones. It is out of print, but used copies are sold on Amazon for about
$4. When I get into a rut during a flare and end up eating the same foods over and over, this is the book I go to for ideas of what to eat.