Stuff to know: http://howtoeve.com/ref.html

Damage type to protect against:
Guristas - Kinetic & Thermal
Serpentis - Kinetic & Thermal
Mordus - Kinetic & Thermal
Blood - EM & Thermal
Sansha - EM & Thermal
Angel - Kinetic, EM, Thermal & Explosive
Mercenary - Kinetic, EM, Thermal & Explosive
Rogue Drones - Kinetic, EM, Thermal & Explosive

Main Damage type to shoot at the enemy:
Guristas - Kinetic
Serpentis - Thermal
Mordus - Thermal & Kinetic
Blood - Thermal
Sansha - EM & Thermal
Angel - Explosive
Mercenary - Thermal
Rogue Drones - EM

High Sec Mining:
Veldspar (333) 1000 T
Scordite (333) 833 T, 416 P
Pyroxeres (333) 844 T, 59 P, 120 Mx, 11 Nc
Plagioclase (333) 256 T, 512 P, 256 Mx
Omber (500) 307 T, 123 P, 307 Is
Kernite (400) 386 T, 773 Mx, 386 Is