I keep a list on my laptop that combines the initiative count and the HPs of all the combatants. It also lets me keep track of the PCs HP that way so I can make sure they're doing it right.
I always let the PCs track their own HP. I always figure I already have enough to track.
How do you track damag to monsters in your game, is there a technique you've created over the years, do you use a 'battle board', something else?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.