Well, I'm a big nerd who likes spreadsheets, so I have one chart for the damage each weapon does, and another larger spreadsheet for information on the enemies to include vulnerabilities and resistances, and a few more charts - one that I need to update with resource tips that @Sierepica_Fuzzywalker and @Jayhawk_Greencape recently posted. And since I have a second monitor that I can connect to my laptop, I can have the spreadsheets open for reference (or adding info) while I'm playing.
p.s. Here's a random tip: For mechanics (and maybe Scholars?) the Chromatic Acid only takes one bottle of solvent to craft. But when you give it to an urchin when they complain about "being grey" or "wanting to decorate", it gives a full 100 aether.