Wow. Looks like a few people who aren't familiar with the game itself are interested. Well, for Vampire: the Masquerade, please click
[URL=https://www.google.com/url?sa=t&source=web&cd=1&ved=0CBwQFjAA&url=http%3A%2F%2Fwww.angelfire.com%2Fvamp%2Fvamp_guardian%2FVampire_The_Masquerade_3rd_Edition__revised_.pdf]Here[/URL]. 

As far as Vampire: the Dark Ages, I cant find any such resources yet. But it's very cool. Maybe even cooler than it's  modern equivalent. But the version called Dark Ages: Vampire has too many pointless revisions that take away from the game and limit the options rather than enriching the gameplay. 

If you want some details, they might take a while  to write but your basic differences in the Dark Ages are: No Camarilla or Sabbat. Therefore every clan is essentially still independent. No Giovanni or true Necromancy discipline yet. The Tremere are new and pretty much everyone else hates them for Diablerizing one of the most enlightened and virtuous Antedilluvians ever to exist. In general, every Domain (local community of vampires) has a Prince or similarly titled authority figure. Even the Voivodes of the Tzimisce in Central and Eastern Europe serve essentially the same function as a Prince, that is acting as the leader of a local community of vampires.