This MapleStory Classic leveling guide covers the route from a fresh character to your first job advancement and beyond: what to train on, when to move on, and why partying up matters more here than in most MMOs.
Level 1-8: Maple Island
Finish every quest on Maple Island before taking the ship to Victoria Island. The quest line hands out enough experience to reach roughly level 7-8 without any grinding, and teaches the controls and potion keys you will rely on afterward. The beginner guide covers this stretch in more detail if you want a slower walkthrough.
Level 10: first job advancement
As soon as you reach level 10, go straight to your base class's town trainer; see the job advancement guide for all four trainer locations. Decide your class before you spend any ability points.
Level 10-30: training toward second job
Keep to the rule that carries through the whole 1-30 stretch: train on mobs you kill in one or two hits. A mob that takes three hits costs extra MP and gives it another swing at you, so move down to weaker mobs rather than grinding through tougher ones for the same experience. Guides built around this launch's maps route new characters through the early Victoria Island hunting grounds before moving on as their level allows. Second job at level 30 is the next real decision point: browse all ten classes or jump straight to the class tier list to see how they compare before you commit.
Why partying matters
MapleStory Classic World gives a large experience bonus for partying, and guides recommend filling out a full six-player party whenever you can find one. The experience gap between a full party and playing solo is large enough that it is worth pausing to find one before committing to a long solo grind. Parties also thin out once players reach the launch's bosses, so grouping up early while the Victoria Island maps are full is worth the wait; see the release date guide for how Founder's Access and the Grand Launch affect map crowding.
MapleStory Classic World leveling guide FAQ
How do I know when to move to a new training spot?
Once a mob stops dying in one or two hits, move on. Staying on mobs that take three or more hits wastes MP and slows you down.
Is partying worth it while leveling?
Yes. The experience bonus for a full six-player party is large enough that guides recommend grouping up whenever one is available, especially from level 10 onward.