Hello Aleph,
Anything regarding "at start" strategy/tactics written for Dom2 is usually 90% applicable to Dom3.
About some Domslang

:
Scales = the values chosen at start for your nation parameters (Order/productivity/Growth/luck/Magic)Cf manual p39 and 51
SC = supercombatant, a big tough unit boosted with items/spells
Bless = special effect given on the "sacred" units (it's a tag) according to your god (pretender) magic paths/levels- cf manual p48
Van = a sacred mounted unit for Vanheim nation, thought by many as very powerful or just overpowered
Hope it helps !