How do you level up fast in Dragon Quest monster joker 2 fast early in the game?

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.