Thanks for writing this primer for Dungeon World.  It helped me wrap my brain around the game's subtle mechanics and freeform nature.  The only thing that I'm still struggling with is figuring out when to deal damage.  Since there are no turns (amazing), I assume that characters suffer as a result of partial successes or failed rolls.  For example, if Morgoth the elf partially succeeds at skewering an orc, his opponent has the opportunity to swing his axe in kind and hack the elf.  It goes without saying that the narrative dictates, I get that.