Daritha is in Tarsengaard, in a building right next to sto (178,189). Talk to her and eventually she'll agree to train you if you have 40 leather toros (I bought these from the wsc blacksmith for 100 gc each). If you have these in your storage, click "It's a deal" and she'll take the armors and give you 60k/60k a/d experience (more if you serve Mortos or Alluwen or if it's sun tzu day - gods xp cumulitive with sun tzu xp).