Fowski's Leveling guide

There are some good training guides already, but I wanted to make one for those like me who want to combine questing, party quests and pure monster grinding.
I'm making it mostly for myself, in case I want to level an alt in the future, but might aswell share it here so you can suggest other ways to train and it can help new players too!

The EXP showed is already converted to Maple Legends 3x Quest EXP Rates.

Level 1-10

Spoiler

Do all the quests in Maple Island. If you do them all you should be lvl 10 or close to it by the time you get to Lith Harbor.
If you're not level 10 don't worry, when you complete Biggs's Story on Victoria Island Olaf in Lith Harbor will give you 1500 EXP (500x3) and 100 HP and MP potions, which are going to be super useful.

Level 10-20

Spoiler

1. After your 1st job advancement, do all your Job Beginner Training quests.
2. Complete The Stump Horror Story (lv.10) (900 EXP)
3. Complete I need help on my homework (lv.10) (750 EXP)
4. Complete I'm Bored 1 and I'm Bored 2 (lv.10) (750 EXP and later on you'll get an Icarus Cape)
5. [At level 15] Move to Nautilus Harbor and do all the quests there.
   
6. Complete the 13 quests in Welcome to NLC Quiz (lv.15) (13x999 = 12,987 EXP + 2 Fame) (Thank you Number32)
7. If you're not level 20 after all this, you can do random quests in all cities, but personally I find them too time consuming for the little EXP they give.
8. I recommend grinding the last levels in Henesys: The Pig Beach killing Pigs and Ribbon Pigs. But be careful with the Iron Pig that spawns there.
9. Another good map to hunt for Pigs is Mini Dungeon: Henesys Pig Farm. No Iron Pig, the map is smaller and nobody will bother you since it's a Mini Dungeon. (Thank you Latte)
10. Save the Pig Heads and Stiff Feathers you might find! You'll need them soon!

Level 20-30

Spoiler

1. Complete Legend of the Snail (lv.20) (22,500 EXP + 30,000 Mesos + 3 Fame)
2. [Optional] Complete Shumi's Lost Coin (lv.20) (6,660 EXP + 30 Return Scrolls + 1 Fame) It's a Jump Quest, so be ready for it.
3. Complete DANGER! <2-H. Mushroom> (lv.20) (9,000 EXP)
4. Complete DANGER! <3-Z. Mushroom> (lv.22) (10,500 EXP)
5. If you want to kill yourself, do the 999 quests.
6. Complete Camila's Gem (lv.23) (16,500 EXP + 1 random Pig equip) (Easy Jump Quest) (Thank you 4Real)
7. If you're not lv.25 yet, grind some more. Horny Mushrooms + Zombie Mushrooms. SAVE all the Horny Caps and the Charms of the Undead. You'll need them for two quests later on.
   
8. If you want, you can also do some Kerning PQ and pray to RNGesus for some scrolls and Slime Boots.
9. [At level 25] Complete Mystery of Niora Hospital (lv.25) (21,900 EXP + Raggedy Cape)
10. Grab Lazy Little Calico, Strange Dish 1, Talking to Stan and POLLUTED! <1-Evil Eye> and complete them simultaneously killing Evil Eyes for a total of (18,000 + 24,000 + 10,800 + 18,000 EXP and a random crappy earring)
11. Grind the last levels at Evil Eyes while doing the 999 quest (12,000 EXP) or do some more Kerning PQ.
12. Grats on 2nd job!

Level 30-50

Spoiler

1. Go to Orbis and complete Nero's Necklace (lv.20) (12,000 EXP) You just need to buy both items in the Cash Shop for 1 meso each. Easy EXP is easy.
2. Go to Ariant and complete the whole storyline (except those quests that make you go to Orbis or Ludi, they are not worth it) After finishing them all, I went from lvl 30 to lvl 33. Check this guide if you're having trouble. (Thank you MrBronkz)
3. Complete Jane and The Wild Boar (lv.30) (7,500 EXP + random weapon 60% scroll) <- The website is all wrong! It's not lvl 25, it's lvl 30. And you need 120 Caps and 100 Tooth! Also remember to save all the Stiff Feathers!
   
4. [Optional] Complete Shumi's Lost Bundle of Money (lv.30) (??? EXP) (Only if you like JQ...)
   
5. [Optional] Complete Icaru's Hang Glider (lv.32) (??? EXP) (Starts a chain quest that will give you Icarus Cape in the future)
6. Complete POLLUTED! <2-Curse Eye> (lv.30) (13,500EXP + weapon 60% Scroll) SAVE the Curse Eye Tails and Lupin Bananas! You'll need 50 for next quest.
7. Complete Mr. Wetbottom's Secret Book (lv.30) (??? EXP + Sauna Robe + 10,000 Mesos)
8. If you're not lv.35 yet grind some Brown & Pink Teddies at Ludibrium or Stopnow & Nospeed at Singapore. While you do this, I suggest completing Stop'em and Stop the Speeder! quests for some extra EXP.
9. [At level 35] Complete The Old Tree (lv.35) (135,000 EXP + 5 Fame)
10. LUDIBRIUM PQ! Good EXP, good rewards and it's more fun than grinding. At least do 35 for the Broken Glasses.
11. Complete Cleaning Up Helios Tower (lv.35) (18,000 EXP)
12. Complete Rightful Donation Culture (lv.36) (15,000 EXP)
13. [Optional] Complete Rowen the Fairy and the Cursed Dolls (lv.35) (140,000 EXP + 9 Fame)
14. Alternatively train in Ludibrium or Ariant until lvl 40. I recommend to train in Arian, because you'll need 10 Lidium Ores for the next quest.
15. [Optional] Complete Icarus and the Balloon (lv.37) (33,000 EXP) (Pre-req for Icarus Cape)
16. [At level 37] Complete all the quests in Korean Folk Town and bring the books to Wiz. Some may be too difficult so you can skip those.
17. [At level 38] Complete The Bounty Hunt (lv.38) (166,500 EXP + 6 Fame)
18. If you're not lvl 40 yet, keep doing LPQs for the Broken Glasses.
19. Alternatively, grind in Tick Tocks or Chronos, in Ludibrium.
    
20. If those are too strong for you, go to Haunted House and kill Nightmares. If you don't want to move from Ludi you could stay at Teddies but zzz...
21. [Very Optional] Complete Shumi's Lost Sack of Money (If you're a masochist) (lv.40) (33,000 EXP)
22. [Optional] Complete Peace at Eos Tower (lv.40) (12,600 EXP + GFA 10% or 60%)
23. [Optional] Complete The Revolutionary plan... (lv.40) (75,000 EXP)
24. Complete Queen's New Make-Up (lv.41) (45,000 EXP)
25. You can stay and train in Desert Giants.

Guide constantly being updated as I level myself. Check Changelog.
If you have any suggestion for where should I train or what quest should I do... or I made any mistake please let me know in this thread. Thank you

Spoiler: Changelog

lol you checked!