Craftsmen have the most lists to research of any race/profession in the game. Choose from the following information what lists you think you will use the most, and research those first.
Spell Lists:
Enchantments
Light Sigils
Smith's Golems
Item Lists:
Basic Construction
Niord's Artillery
Fortifications
Golem Mechanics
Slashing Weapon Creation
Crushing Weapon Creation
Thrusting Weapon Creation
Fired Weapon Creation
Flexible Weapon Creation
Cloth Armor Creation
Leather Armor Creation
Studded Leather Armor Creation
Chain Mail Armor Creation
Plate Mail Armor Creation
