As you travel down a cool breezy corridor, you hear the hollow echo of your own steps.  Gems of all sizes and colors sparkle and twinkle from the torchlight that adorns the walls of the hall.  You notice the hall slowly descending deeper and lower into the cave...you must be going very deep near the heart of this mountain.  You arrive in a room that has towering bookshelves..most likely because this is the cave and library of a dragon.  Scrolls and books and tomes are all over the place in here...on top of the bookshelves....piled on tables....Scrolls and murals are pinned up against the walls of this large library...showing the surrounding landscapes and all of their mountains, roads, and forests.  The torches in this room glow a soft but bright luminescent blue..most likely of a magical flame.  Could you imagine the temper of a dragon that just found out all the knowledge he has gained over the years just burned down in a matter of minutes?  It is very warm, quiet, and peaceful in here.  There are chairs and a table...you figure this dragon must have quite a few friends of the humanoid race.  You walk up to the bookshelves...and look over all the titles...wondering where to begin.....