http://i.imgur.com/5uvL3Qo.gif
Damage Type to Tank
Angel: All damage types, but most exp/kin
Amarr Navy: EM/TH
Gurista, Mordus, Gallente: Kin/Th
Blood: EM/Th
Sansha: EM/Th
Serpentis: Kin/Th
Mercenary: EM/Th/Kin
Caldari navy: Kin/Th
Khanid: EM/Th
Zazzmatazz : All
Mordus: Kin/Th
Rogue Pirate: EM/Exp/Kin
Odamian: Kin/Th

Damage Types to Use
Angel: EM(shields) Exp(Armor), or th all round
Amarr Navy: EM (shield) Exp(Armor)
Mordus: EM (shield) Exp(Armor)
Gurista: EM(shields) Exp(Armor), Th/Kin all
Blood: Th
Sansha: Th
Serpentis: Th
Mercenary: Exp
Caldari Navy: Exp (Kine/Therm)
Khanid: EM(shields) Exp(Armor)
Zazzmatazz: EM(shield)/Exp(Armor)
Rogue Pirate: EM(shield)/Exp(Armor)
Odamian: EM(shield)/Exp(Armor)
---Smallest to Largest Site---
Burrow>Hideaway>Refuge>Rally Point>Den>Yard>Port>Hub>Haven>Sanctum
---Easiest to Hardest Site---
Hidden>Forsaken>Forlorn
Stacking Penalities
1st mod: 100%
2nd 86,9%
3rd 57,1%
4th 28,2%