Yeah, I suppose I can tell you what you have to do.
Dodging is easy. Each Round (A Round being the period in which every participant gets one Turn) every combat participant gets one reaction. There are a few things you can do with it, but usually you dodge or parry. Dodge is a dodge skill roll, pretty simple. If you succeed, the attack misses (Speaking of which, we totally didn't dodge at all that game, and it's not like you can't dodge guns). If it's automatic fire, some shots may still hit.
You can also parry, which is only in melee and only if you have a melee weapon too. Parry is a WS test, no skill associated.
On fate points and PC death. You can spend fate points to reroll your own rolls, including rolls that would have killed you had you not rerolled. You can't use them to reroll other people's rolls. If someone else kills you with a roll, or you're killed by something that isn't a roll (For example: If you were the bounty hunter from the opening sequence of bulletstorm and got vented into space while tied to a chair), then you must burn a fate point. Spent fate points regenerate, burnt fate points are gone forever. In your sheet, just have 3/3 or whatever, with the first number being unspent points and the second being total, lowering the total if you burn a point. Easy.
You can burn already spent fate points, but if you burn an unspent point you can't spend it later.
PC death is just like NPC death. If you die and you don't have any means of undoing it, you're dead. Congratulations on your dead character. Burning fate points usually doesn't mean fate reweaves itself and you come out unharmed. If you get shot in the head and burn a fate point, you're probably on the ground alive but with part of your skull missing.
Now then, the mission and all. You're going to be sent to a feudal world with colonial era technology, specifically to the capital city. There you will need to find a way to overthrow the current planetary governor and replace him with someone less of a lecherous old bastard. The current king spends all of his time drinking or whoring or doing other disreputable things with the people's money. There are going to be quite a few ways to do it, and quite a few special surprises and complications, but you'll have to wait for the actual game to start to find out.