Unlike DnD where your actions are based on luck and stats, in our HJ world, you don't have to worry about dice--just what you can do physically and what your stats dictate.
Some actions may require specific skills, like healing, lock picking, spells, and the use of a weapon. Purchase these skills by cashing in your "skill points." You can see all of our skills on our Rulebook, and use the stat database to keep track of them. This database also helps our officers write better plots. Some of these skills can be used in really interesting and powerful ways.
One word of caution: Avoid Metagaming. Metagaming is when a player uses outside, real world knowledge within the game. For example, Mr. Dixon might know it was Ms. Mitchell who stole his gold while he was unconscious; however, in game his character wouldn't know that. So he can do chasing after her; his character would be clueless as to who stole the gold. He might have suspicions, but he wouldn't know. Or if you hear the officers whispering about some aspect of plot, don't give it away to others, and don't use that knowledge in game. Remember to separate your real self from your character.