Is there a handy guide for writing PF modules I could use? If not, what are a few well-designed modules I could use as examples of how to put together an adventure module? I've not got much money to pick up anything on Amazon or otherwise but I'm hoping to have a look at a few downloadable modules which are well-organized and well-designed. Plot details, monsters, treasure, dungeons, and so on are not so important as how they are presented.