Thanks for playing! Right now the only hint on what to do about burns will come from the blacksmith, but I'll look at putting in another hint earlier. Some parts of this game are intentionally a little bit of a puzzle, but I don't want it to be too hard to figure out. The way fire damage works (in the current public version you're playing) is that it's 15% of your max HP each turn, and Fire Resistance increases the chance of the "on fire" status to end (and turn into "burned"); it also decreases the initial damage from fire attacks. In the new version I'll have out soon, fire damage per turn will be reduced based on your Fire Resistance skill (and Fire Resistance still does the other stuff too).