We're discussing a group-wide shift to Rogue Trader from 3.5/Pathfinder, and I have no idea where to start (besides chugging through this behemoth of a rule book)
Is it paradoxically more feasible to melee in space than in fantasy?
The system isn't as daunting as the lore. I had been browsing 3.5/PF books for years
Literally just finished and went for a smoke so step 1 is done
The best advice I can give you is to be very careful about what equipment your plays can acquire. If you don't, they'll get very OP very quickly.
Also, Rogue Trader is an extremely broad system where players are pretty much the 1% of the Imperium, so they start off pretty powerful as is. I'd recommend limiting what source books you use for simplicity's sake. Maybe just the core and the handbook (I can't remember the name off-hand), since those have the essentials.
I'm actually not the GM for the first time in a while. Is there a type of equipment I should stay away from as a player?
I just wanna have some crazy prosthetics
You are space conquistadors. You are outside the law by permit of the Emperor.
Dude I went through the opposite, I went from Rogue trader to pathfinder and the difference was huge. Good luck and remember low is better :)
Anyone have the story of the autist who makes a hand like that guy? Like hes got chapstick and pens and shit and his parents sent him to a therapist and took the movie away thinking he'd cut his own hand off?
I'd consider the two mandatory RT books (aside from the basic rulebook) to be Battlefleet Koronus (assuming you plan doing any space combat; the book features additional types of weapons like torpedoes, more ships for PCs and enemies and simplified rules for running NPC ships to make combat less pain in the ass) and Into the Storm (not strictly necessary but it adds a ton of extra items, additional background options and the game's equivalent of prestige classes, plus it has rules for playable Orks and Kroot). Koronus Bestiary (monster manual) is nice as well if you need stats for various xenos (Eldar, Orks, some random alien beasts and other, weirder stuff).
You need to know that a basic rogue trader does not start with the "decieve" skill and thus can not lie efficiently. Ponder that one for a moment.