Hello, welcome to Mmooffers!
Here I got this leveling information in Maplestory, hope it could help you some !
From level 1 to 8: You should still be on Maple Island the first island. Stay in the first few areas of the island and fight green and blue snails. Once you're at lvl 8 move on to Victoria Island by taking the Victoria form South Perry.
From level 8 to 1: In the training area Start fighting one screen west of Heresy's is the bowman town. You want to stay on the bottom floor of the area and fight the snails you see. Use your Energy Bolt as often as possible and when MP runs out stand on the key on both side of the screen and recover.
From level 13 to 18: In the training area time to move up a floor. This floor is covered with Green Slimes. These will do about 6 damages to you if you haven't bought all the armor. These give 10 EXP a pop so things go buy pretty quickly.
From level 18 to 20: In the game either stay on the slime Floor for a level or two more or move up to the Orange shroom floor. The orange shroom will give 15 EXP per kill but you will have to take about 3 shots to kill them which by now aren't a whole lot of MP but takes a while
From level 21 to 30: To the Horny Mushroom tree. These guys will give you over 10% for the next few levels (Maplestory powerleveling). Fight these guys all the way up to level 30
From level 25 to 31: If you want too do the PQ. Mages are the most useful character in the PQ and will be accepted into parties easier. If you don't feel like waiting for the PQ then just go level on Horny Mushrooms.
From level 31 to 40: There are a bunch of spots near Perion like the burning zone or the land of wild boars either level on boars or fire boars.
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