This is part of a series of quest designed to help players learn how to use basic Monk abilities, while also teaching them basic MMO princples.
Whenever you hit a tenth level starting at level 20, you will gain a lead-in quest pointing you towards the Peak of Serenity. Use your Zen Pilgrimage to get there quickly and easily. As soon as you arrive turn in your quest to [npc=66260], and he will qive you another quest which will point you towards a specific Master.
After completeing and turning in the quest, you will be rewarded with some gold, a piece of gear, and [spell=130283], which will give you an experience buff for 1 hour (if you are level 90, [spell=130283] will give you 3000 mastery instead).
After completeing a quest (except for Complete Your Training: The Final Test), you will be given that quest as part of your daily rotation in order to get a some more gold and a new [spell=130283].
Here is a list of quests, the monks who will be training you, the ability you will be focusing on, and the importance of the lesson:
Level 20
Quests: The Peak of Serenity - Begin Your Training --> Begin Your Training: Master Cheng --> Practice Makes Perfect: Master Cheng
Trainer: [npc=66138]
Ability: Roll
Importance: Getting out of the Fire
Level 30
Quests: [quest=31855] --> [quest=31833] --> [quest=31841]
Trainer: [npc=65960]
Ability: [spell=115080]
Importance: Target Focusing and Burst
Level 40
Quests: The Peak of Serenity - Continue Your Training --> Continue Your Training: Master Kistane --> Practice Makes Perfect: Master Kistane
Trainer: [npc=65899]
Ability: [spell=116095]
Importance: Snares
Level 50
Quests: The Peak of Serenity - Continue Your Training --> Continue Your Training: Master Yoon --> Practice Makes Perfect: Master Yoon
Trainer: [npc=66073]
Ability: [spell=116705]
Importance: Interupts
Level 60
Quests: The Peak of Serenity - Continue Your Training --> Continue Your Training: Master Cheng --> Practice Makes Perfect: Master Cheng
Trainer: [npc=66180]
Ability: [spell=115078]
Importance: Stuns
Level 70
Quests: The Peak of Serenity - Continue Your Training --> Continue Your Training: Master Tsang --> Practice Makes Perfect: Master Tsang
Trainer: [npc=66149]
Ability: Crackling Jade Lightning
Importance: Knockback
Level 80
Quests: The Peak of Serenity - Continue Your Training --> Continue Your Training: Master Hsu --> Practice Makes Perfect: Master Hsu
Trainer: [npc=65977]
Ability: [spell=117368] and [spell=115450]
Importance: Disarming and Removing Debuffs
Level 90
Quests: The Peak of Serenity - Complete Your Training --> Complete Your Training: The Final Test --> No Daily
Trainer: [npc=66260]
Ability: All Abilities you have used so far
Importance: Final Exam