Blacksmiths represent the item crafters and weapon forgers of Istarian trade. Trained to be versatile in many different fields of study, they study both Weaponcraft as well as Fletching. Along with crafting items, they have rudimentary wood and metal gathering skills, as well as the ability to process the resources they gather. Blacksmiths are one of the three basic craft schools available to anyone in Istaria.
Collection tasks require you to have the item collected in your inventory but do not require you to get the quest first. This means, for example, you can bring 200 Iron Ore to the trainer, get the quest, immediately do the turn in (Greet the trainer), get the quest again, do the turn in, and repeat twice more without moving from the trainer.
Craft tasks require you to make the items after you get the quest. The best way to do this is to bring a load of the raw material to a trainer next to a refining machine, get the quest, make the item, greet the trainer (turn in), get the quest, and so on until the material is used up.
Report tasks are delivery quests designed to show you where the Quartermasters are.