To begin Hunter, go to your magic spell book and click on the Skill Teleport. Head over to where it says Crafting & Hunter, and choose Hunter. You will travel to an enclosed area circled by many trees. For the hunter skill, you'll need to purchase and use a Butterfly net, and have many Implings Jar's consecutively bought. You will also have to have all of the other spaces in your inventory empty because you need to buy every inventory of 27 Impling jars. Every time you catch 1 Impling, 1 jar will be filled. These can be bought from Tamayu.
When you have caught 27 Implings and your inventory is full, walk to the Black Market Dealer and sell all your Impling Jars. You have to repeat this process till you achieve 99 Hunter.
Experience gains increase as you are able to catch higher level implings. Be sure to catch the best option at your given level.
Impling jars cost 1 ds coin each, and all implings sell for 3 ds coins each, resulting in a 2 Ds coin profit per impling caught..