If you roll a 6 then add it and keep rolling until you don't get a 6 again. If you roll a 1, you can do 3 things. First you can add it normally, second you can subtract the highest roll, and third you can let it pass but make their be an after effect for it. When rolling difficulties there is a basic set of difficulties that we use. Now, what you can do when you roll is to make actions.
Actions are anything from picking up a rock, to shooting a stormtrooper with a blaster.
Everyone can react to an action, say a Stormtrooper shoots at you, you react by using your Dodge skill to dodge. The way you would do this is to roll your Dodge dice against the Stormtrooper's blaster dice. If he beats your roll then you are hit and you start figuring damage, but if you beat his roll then you jumped out of the way. I don't want to get to involved with combat, I figure you can figure it out most of the way. You will roll your weapon's damage against your target's strength.