Training Credits
Whenever you level in an adventure school (or perhaps whenever your rating goes up... to be determined), you earn one training credit. These credits don't appear anywhere that can be easily discerned, but they are there! To redeem them, you need to find the appropriate NPC. They are scattered widely throughout the world, so you will probably have to do some running. You will know you have found one of these NPCs because they have appellations such as 'the Focused' or 'the Mindmaster'. Here is a list of Masters found so far:
Strength - Harro
Dexterity - Kion - 20536, 24446 - top floor of the militia barracks
Focus - Player town just west of Dalimond
Power - Floating Island
Health - Aughundell - 24856, 25577
Crush - Dalimond - 22737, 22651
Pierce - Morning Light
Slashing - Tazoon - 23656, 24922 - above the south gate
Bow - Dalimond - 22926, 22792
Unarmed - New Rachival
Nature - Mahagra - 23406, 30989
Spirit - Aughundell (NW of town) - 24962, 26147
Energy - New Rachival
Mind - Floating Island
Flame - Dralk - 22528, 29035
Life - Chiconis