Choosing Your Character, Part 5 - Wiki It

Listening to your friends' recommendation, watching YouTube videos, and borrowing characters won't be enough until you've read about the character/s of your choice. The write ups (found in forums and resource sites) might give some info that would make you abandon an early choice, and go with something else. A Bagi Warrior, for example, can be difficult to level up, since it's not often seen as a priority (players prefer damage dealers and healers) in Dead Front and Instance Dungeon parties. Later on, however, a Bagi is annoyingly hard to kill, since it can tank a lot of damage, a good choice when you love to PK.

Another curious bit: a Mage (Incar Magician) or a Staff VS (a Vicious Summoner using Staff instead of Twin Blade) are good choices if you prefer to grind alone; and when your Internet connection is so bad you get disconnected during events (Dead Fronts and Instance Dungeons). Both have enough Area of Attack (AOE) skills that are enough to dispose of mobs twice of thrice the amount you can lure on your own.

Two recommended sites for reading up are 2moons.wiki.org and 2moons.mmosite.com. Please note that the version of Dekaron discussed on those sites is far ahead of the version that is currently Dekaron SEA. So there are character skills, items, and maps discussed there that are not yet available to Dekaron SEA players.