I don’t understand how to play this? Are there any rules for this
The first page shows the rules for resolving actions (roll 3d6, +/-1 to any result if class is applicable, success if you roll a pair or three consecutive results). The icons representing entrance, exit, and goal give you direction when you draw your map of the dungeon. Each page shows the procedure: roll your 3d6 on the grid, then draw rooms around the dice. The results on the dice determine what monsters/NPCs you might find in those rooms. I'll upload a few drawn-out samples to help!