So, first there's the mandatory "hello all i'm new here.." etc. But to cut to the chase I'm here to ask for some advice on running Rogue Trader games. I've run other RPG's before such as D&D, Call of C'Thulu and Paranoia but RT turned out to be a bit more daunting than I expected. I somewhat got forced into running the games since I'm the only one who knows anything about warhammer 40k lore in the first place, but I'm finding it hard to keep track of everything in this game (especially space battles) Now i've run a few adventures already but I'm well aware they were all-in-all failures even if my players don't. At this point my campaigns story is getting ready to really take off, involving a prophecy and some other things, and I really want to start doing it right. So I'll take tips on anything from basic statistic tracking to how adventures should be run over all. Like I said I have experience in other games just wanting to know and Rogue Trader specific tips and tricks you guys have picked up.
Also, my players keep getting into arguments about how one dies in Rogue Trader. If anyone can explain this better than the book please do, I'm tired of ending arguments with "I'm the GM so just shut it and get on with the game."