Theres 6 type of quests:

1. One-Time Quests aka Normal Quests - I think this doesnt need any more explanation.
2. Repeatitive Quests - Quests that you can do many times, usually requires you to hunt certain things from mobs, eg. hunt 1 honeyball from bear and you get 100gp each. So if you hunt 100 of it, you will get 10k.
3. Rank-Up Quests - Pretty self-explatonary.
4. Party Quests - Quests that you do with your party, a leader of the party takes the quest.
5. Guild Quests - Quests that you do with your guild, a leader of the guild accepts the quest.
6. Im not sure about it, its either havent released in VN version yet or I just havent see it.

Location of NPC's
http://img221.imageshack.us/img221/6426/hnhquest12jr0.jpg

NPC's
http://img226.imageshack.us/img226/2926/npc1jd7.gif

1. Quest lvl 5
- NPC: NPC 1
- Step1: Take the quest from NPC1
- Step2: Kill the frogs (south of first city if I remember right) get 10 quest items from them.
- Step3: Return to NPC1 and get rewarded.

2. Quest lvl 10 (first rank-up quest)
To be able to do this quest you need to be lvl 10 of course, and have learned your active skills (Alt + F).
- NPC: NPC 3
- Step1: Take the quest from NPC3
- Step2: Talk to NPC2.
- Step3: Talk to NPC1.
- Step4: Hunt Wild Boars http://img205.imageshack.us/img205/4285/10013sn0.jpg To get 1 Quest item from it.
- Step5: Talk to NPC2. (he will give you some quest-armor item)
- Step6: Talk to NPC4.
- Step7: Talk to NPC5.
- Step8: Hunt Gray Wolves to get 3 quest items from them. http://img96.imageshack.us/img96/1547/10009lc3.jpg
- Step9: Bring them back and talk to NPC5.
- Step10: Talk to NPC4 (now you will get some weapon-quest item).
- Step11: Talk to NPC3 and BADAM! you have been promoted and awarded with 10k pure gold!

3. Quest lvl 12
- NPC: NPC 4
- Step1: Get your quest from NPC4.
- Step2: Talk to NPC6.
- Step3: Kill these monsters: http://img207.imageshack.us/img207/9537/10002nv7.jpg to take 10 quest items from them. Then kill this http://img178.imageshack.us/img178/2571/10010qa3.jpg to get 1 quest item from it (this mob is somekind of boss monsters that appear once every 10 minutes at middle of the previous monster's spawn). Heres maybe clearer picture of it: http://img223.imageshack.us/img223/9485/10010xb7.gif
- Step4: Get back to NPC6. Quest Done.

4. Quest lvl 15 (repeatitive quest)
- NPC: NPC 5
- Step1: Get your quest from NPC 5
- Step2: Kill lvl 15 Bears http://img219.imageshack.us/img219/7849/10008da4.jpg or lvl 20 Bears http://img219.imageshack.us/img219/4426/10014sx3.jpg
- Step3: 1 Quest item returned from lvl 15 bear you will be awarded with 100gp. 1 Quest item from lvl 20 bear you will be awarded with 200gp. TIP: I dont know if this works in JP version but works in VN version: Hunt 100 quest items from lvl 15 bear and 100 quest items from lvl 20 bear and return all in once, you will be awarded with 50k.

5. Quest lvl 15
- NPC: NPC 2
- Step1: Take the quest from NPC2.
- Step2: Hunt these http://img80.imageshack.us/img80/618/10016uu8.jpg and get 10 quest items from them. Then kill this http://img180.imageshack.us/img180/3867/15007fn3.gif to get 1 quest item from it. Its a boss monster that spawn once in 15 minutes.
- Step3: Talk to NPC6.
- Step4: Talk to Go back to NPC2 and get rewarded. Quest Done.

6. Quest lvl 20
- NPC: NPC 4
- Step1: Take the quest from NPC4.
- Step2: Hunt These http://img179.imageshack.us/img179/7067/10011uy6.jpg and get 10 quest items from them. Then hunt a boss monster http://img205.imageshack.us/img205/5980/10012sr1.gif and get 1 quest item from it. They spawn once every 15 minutes.

This Map might be useful for somebody: http://www.hiepkhach.net.vn/thu_vien/Ban_do.asp?loai=1&map=101
Click on the monster's picture and it will show you where they spawn in map.
I will post quest till lvl 30 later when I get home.

thankx man,maybe the moderator should make ur guilds stiky

Thanks for the guide tartan, is really helpful and clear. The only thing that I have to say is that the Japanese version seems to have some changes. For example, in lvl 3 you have the quest about frogs and in lvl 6 a quest about killing foxes. The second one is based on killing 10 foxes and returning back to get some kind of material which you give to the blacksmith to recieve a class weapon (the second one).

Humm.. I didnt focused on Quests at all in JP version (mainly because I couldnt understand it lol), I knew about quests when playing VN version. The lvls maybe different but are the concept of all the quests still same? I havent test quests on JP version.

Yes, japanese quests are similar. 1st Job quest is exactly as you said, but after lvl 12 I don't know if it remains similar as VN version, because I haven't gone so far. :p and i can't understand japanese version too, because my nihongo (jap) isn't so good.

is the reward item and exp normal?

quest lv10 to be a spearman so hard, i couldnt pass it....
i got 1 quest item for the first one, then i talked to npc #2, and he gave me nothing (he supposed to give me quest-armor item, right? but he didnt)

that's weird i got the armor quest, and i talked with those 2 npcs, but when i hunted for the wolves, i got none (i killed so many)

Okay, due to too many requests, I have decided to put it back. (if enough requests for lvl 20-30 quests are made then I might do them too).

thanks alot for all this, it will be even more helpful when english yulgang comes out.

Is this really necessary? Cause isn't this what short period betas are for....for players to find out more about the game, such as gameplay, quests, builds, equips, upgrades, and etc. And you will get an icon on the lower right hand corner once you reach the require level to obtain the certain quest, which include a message in it, telling you players what to do...so i'm just wondering, is it necessary to post it?

Well I posted this guides for ppl playing foreign versions.. but if you feel this useless or somekind of spoiler then I can remove of course..

no its fine is there a database for this

hey where does the boss wolf spawn

No, you don't need to take it down....it's fine...don't mind what i said before