Leveling areas that will make you rich
From level 10-20 level at slimes, or pigs if you are in the late 20s
From level 20-30 level at bubblings, octopus, green mushrooms, horn mushrooms, tricksters, brown teddy, drum bunny.

Hunting for Low Levels (lvl 30 or below)

How to hunt efficiently
Always, I mean always, hunt monsters that are no more than 3 levels above your level (for below lvl 30 people). Why? First, your accuracy sucks. Most of the you will be missing against high level monsters. Second, your damage sucks. Last, you will not make that much more  maple stroy mesos out of hunting than training, so why bother? You can hunt with a party of 2 or 3, but that is very uncommon. Infact, I rarely see ANY lvl 30 or below people hunting at...lets say evil eyes. They will lose tons of money and the drops aren't that great. For people who want to hunt at higher monsters like fireboars or curse eyes, YOU WILL GET RAPED. DON'T GO THERE YOU WILL WASTE TONS OF POTS, EXP, AND TIME.

Places to hunt
For level 10-20 hunt at pigs (around 10-13), octopus (around 13-17), bubblings and green mushrooms (around 17-20).
For level 20-30 hunt at dark axed stumps and undead mushrooms (around 20-23), wild boars and evil eyes (around 23-27), brown teddy, tricksters and drum bunny (around 27-30).

Pros/Cons
Pros: More mesos, better drops (if you get lucky)
Cons: VERY slow leveling, low damage, terrible accuracy, waste of money, a high chance of dying.

My recommendation
My recommendation is to get to lvl 30 as fast as possible before even think of hunting. Low level people shouldn't hunt due to their terrible accuracy and damage. Most people would like to get to 2nd job as fast as they can. Until then hunting is very boring and ineffecient.

 maple stroy mesos  Making for High Levels (lvl 30 or above)

How to save money
Basically the same thing with the previous one for low levels, except now you have more money and can buy scrolls and more expensive items. Scroll for weapon could cost up to 800k and scroll for armor could cost up to 4 mil! Scrolling items can be highly rewarded but also devastating. A lucky person might get a 10% glove atk on his/her first try and perfect scroll the rest of the slots with 60%s. An unlucky person might end up with only 1 or 2 60%s to work. The cost for a 60% glove atk is at least 2 mil, 2 * 5 = 10 mil. If only 1 or 2 worked, the price of the glove will go down to as low as 1 mil for the 2 atk and 3 mil for the 4 atk. That is a HUGE lost of money and it might happen to anyone. Yes that means you too. I had an experience when I wanted to get a 10% glove for dex to work on a clean wg, so i purchased 32 10% glove dex and made 32 wg (around 3.5 mil). None of the scrolls worked. Don't try your luck with scrolls UNLESS you are rich enough to buy all your weapons/equipments and your scrolls and still have leftovers for another set of equipements and pots. Rather than trying your luck, you can always buy a prescrolled weapon/armor. People tend to sell them for more than the total cost of the equipement and scrolls (if it is decent scrolled) because they got the scrolls to work. Save up your money and buy a GOOD prescrolled armor/weapon that will last you for at least 5 levels. This way you can level up faster and be able to actually sell your item due to high demands for prescrolled items.