This is a guide for those who REALLY don't know where to grind. This guide is off of MY Experience, this guide WILL suck for some of you, This is no lie. Try this guide out anyways.
Level 1-3 Priring
Level 4-6 Beetle G, Wild Dog and Wolf
Level 7-10 Grey Beetle, Blue Wolf, FusuHusu, Ugly Dog (great training) and Wild Boars
Level 11-15 Boglee, Bogle(if you can handle these guys)and Gelatin Cube
Level 16-20 Goblins and Silk Worms
Level 21-25 Silkworms, Behemothe Stomach(if you don't lag here), Psyche, Kobold, Brown Bear(really good for me when I was around lvl 22) and Ant Cave (take party if you want to try finding some crystal mine tickets for money). Invoke Dungeon ( get 2 other people to join you around level 20-30.(Good level to start getting your armour)
Level 26-30 Black Bear(maybe hard for some people), Moul-Moul, Bear Wolf(may need to bring a party for big mobs), Black Beetle(same thing for Bear Wolf), First Arcadia Map(pretty good for the most part) and White Tail Gumiho
Level 31-36 Jack-O-Lantern(really, really good maybe the best for these levels), Privaring(if you can handle them), Great Monkeys(not Zin Great Monkeys), Black Tiger, Snowfields and Hounds(do not go here with low def)
Level 37-39 Ice Ladies(get party), Kappa(they attack pretty slow) and Warrior Kobold(not bad but not that good either)
Level 40-45 Shangrilla (the best for me, party with 2 other people and its good, try to get hyunmu set for extra bonuses), Cherry Ghosts and White Cherry Ghosts, Shadow Ninja Blue or Red, Flower Snakes(not that good but can be good sometimes). Now there is toad island. Go to Toad forest and go grind on some pigs. Great exp there.
46-50 Shangrilla(try to beat hyunmu, get a healer, tanker and someone long ranged for quicker kills, it gives 88,969 exp), Gargoyles, Prispring (very good exp if you party with another person, big mobs and good exp), Axe Beak(you can try but it's really not that good), Canine God(same thing with Axe Beak) and Walking Flower(try walking flower around level 48, it's not that easy but it spawns about 3 or 4 at a time and it gives a lot of exp) and also Toad Forest (anywhere in there is good)
Remember everyone, you do not have to train all the time. I did quests half of the time and it got me pretty far with money and exp. Please Comment about this guide, tell me whats wrong, what I need to fix or anything that you think and please do not say it in a very mean way.
Credits
Latale Hidden Street for providing me with some info
Me for making this guide
Latalers site that shut down and lead me to this site
My Friends in the actual game
Update 1: I've changed the Title to Grinding since most people say grinding rather then training
Update 2: I've added Toad Forest
I'm currently level 120 in the game
Contact me in the game, my IGN (In Game Name) is
IcyXUsakom