The article is from the official site. it will give us some quests playing in game.

Newbie Quest (Level: Lv1 - Lv10)
Newbie quests are for new players to familiarize themselves with the game functions, shortcuts, maps and NPC etc. The system will give new players a quest when they first enter the game to help them start off. Guides will be provided so that players can understand the game better.

Class Quest (Level: Lv10 onwards)
After players have a good understanding of the basics of the game, they can learn more advanced gameplay. When a player reaches level 10, he or she can select the class they want to belong to at the respective NPC. Available classes are Swordsman, Hunter, Herbalist and Explorer. Choosing a class is important as players can learn skills and be equipped with better weapons and armor. When players reach level 40, they can select a specialization of the class they have already chosen.
Random quests will be generated after players completed their class selection. These quests include the delivering of letter or parcel, hunting of monsters or collection of materials etc. There will be rewards of gold and experience after each completed round. Also, after completion of 1 whole cycle (10 rounds), players will be rewarded randomly with a special item, armor or weapon. There is a chance of getting rare items for your class.

Normal Quest (Level: Lv10 onwards)
These quests are meant to guide the players along as they level up in the game. It will bring the players deeper into the forest or desert as they advance in the game. While doing these quests, players will be met with monsters suitable for their level.

History Quest (Level: Lv10 onwards)
When players reach level 10, the respective Newbie Guide in the player?s birth city will open up the history quest for players to explore the myth and legends of Pirate King Online. You will understand more about the game story as you complete each part of this quest. Upon completion, players will be rewarded with Job experiences so that they can learn skills such as mining, woodcutting, setting up of stall, salvaging, repairing and fishing.