You gotta do it slow
An easy way to level up is to the the dragon egg quest saga (when you are a noobie) and then after that you can go to Oaklore and do the quest "explore ruins" from the guy in the catapult to the left. :)
If you want to get them up fast go on quicklevels.wetpaint.com
do goals and wait till you get a dragon from the hatchery and the breeding place
go to marowaks dojo and train in the dragon dungeon
If your talking about the quest, you kill wverns and Water draconians. If your talking about dragon slayer class, that's a rank and if you want to rank it up, I suggest undead pirates
first level up to level 10 then go to oaklore and talk to sir ano outside of oaklore and finish the first quest and on the second once you finish you will get the belt but you may have to level up to like 32 before you can use it.
Become a shapeshifter, level up and do quests given by the guy and you can eventually turn into the Raydius Dragon.
Go to falconreach walk to ash click quest then challenge. Hope this helped
To level up quickly in Dragon Quest Monsters: Joker 2 early in the game, focus on battling weaker monsters to gain experience without risking defeat. Utilize the "Tactics" menu to optimize your team’s performance and ensure they are using their strongest attacks. Additionally, prioritize completing quests and participating in tournaments for bonus experience. Lastly, consider capturing and training a diverse range of monsters to maximize your battle options and experience gains.
You can do the Kerning Party Quest up to the mid 20's. Then you can do Winston's fossil quest and other high exp quests. At level 28 or so, you should have Manji take you to the Ariant and there are many high exp quests you can do there.
you do quests and NOT these two quests:Ballyhoo, and the worst prank ever. p.s. if you get to Zhoom's quest dynasty tomb, good luck with that! :)
you can get a baby dragon after finishing the quest chain of a baby dragon if you want a titan dragon you need a dragon amulet to grow it up