http://us.battle.net/wow/en/characte...alpha/advanced
That is my armory, and here is a basic guideline of DPS as a Blood DK.
Stat Priority: Hit Cap > Crit > Dodge/Parry > Haste > Mastery.
T5 Talent: Runic Empowerment or Blood Tap - It is really a fight to fight basis on which you should run; personally I prefer Runic Empowerment just because overall it is the highest rune regeneration, but Blood Tap can be really nice especially with the Curse of Hubris for pooling lots of death strikes.
T1 Talent: Roiling Blood on AoE & Plague Leech on single target. Plague Leech is minimal, but it does make a difference.
Glyphs: This is really fight dependent, but I run the core three you see for the majority of the fights. Glyph of Dark Sim & others can be useful at times.
Gear Priority: Just follow your stat priorities, personally I stick with the tank 4 piece for the survivability because of how sketchy tanking can already be with such little survivability stats.
If you have any questions, just post them here or contact me in-game. And for reference for individual glyphs etc, here is a list of my parses:
http://www.proraiders.com/player/ind...pec=Blood&r=25