In order to advance in classes you must gain "Class Levels" and certain Weapon and/or Magic Skills.  "Class Levels" are gained by leveling up while in a particular class, Skills are explained elsewhere. Keep in mind that there are six different kinds of clssses, only Basic and Lv1 are shown here.  Others are Lv2, Lv3, Ultimate, and Special. Experiment with different skills and classes to find new ones. I will contact you if you can change classes to something other than the Basic ones.

Apprentice Technomancer: The basis of all Mechanical-type classes. Classes that stem off of this one are Engineer, Blacksmith, Craftsman, and maybe some others. Can equip Hammers and light armors. I do not recommend you start as an Apprentice. I mean it.

Mage: The basis of all magical classes. Classes that stem off of this one are Priest, Wizard, Warlock, Summoner, and Dimension Wizard. Can equip all Mage-type weapons and use all Lv. 0 spells.

There are three basic classes that you can start as:

Fighter: The basis of all fighting classes. Classes that stem off of this one are Knight, Dragoon, Berserker Wolf, Warrior Monk, Archer, and Thief. Can equip all basic Figher weapons and armors.

Fighter-Based Classes

Knight: A sturdy, powerful, flexible class that can wield all kinds of Swords, Armors, Shields and Sword Breakers. Has many Strength and Battle-related abilities. Another major advantage is that it compliments almost every other class.

Dragoon: "Dragon Knight", The second heaviest class. Can "Jump" into the air and hit thier enemies from above with a great deal of momentum. They will quite often crack skulls and metal with their body-splitting spears. They are one with the Dragon Spirits which they serve. If one knows how, he may be able to call upon a Dragon Spirit for aid.

Berserker Wolf: "Crazy Warrior", An uncommon and unloved sect of warriors who fight without a shred of fear. Said to become predators in their bloodlust, they can use their wild "Dash" skill to cut down any enemies in their path with a massive axe. They are always looking for new ways to hasten their assaults and confuse and terrify their opponents.

Warrior Monk: "Spirited Warrior", A quiet and introspective group of warriors entirely devoted to the "Path of One": One Body, One Mind, One Spirit. They spend their time meditating and practicing excercise and fighting routines designed to clear the mind and focus the body's energy to whatever it needs. This, of course, leads to tremendous physical heath and phenominal attack rates.

Archer: "Rear Warrior", A seemigly cowardly bunch, they stay near the back and provide invaluable cover fire for those who need it. It seems the best archers have really weird bows and arrows with all kinds of wheels and strings and heads on them.

Thief: "Shadow Warrior", Thieves make up for their needfully light armor and weaponry with an ability to sneak up on creatures and strike without warning or take their possesions without notice. They are ever in search of the next valuable thing that could be theirs.

Mage-Based Classes

Priest: "Holy Mage", These defenders of light take pride in their abilities to heal others. However, they also have a mission to cleanse the unholy. They belieive that the Light will always defeat the Darkness, so they learn powerful Holy Magics to defend the Light. Elements: H, R, N/E.

Wizard: "Elemental Mage", These ones take it upon themselves to master nature. Their intentions may or may not be pure, but most don't make it far enough to matter. They may wish to learn this magic for its knowledge, its power, or perhaps to better defend their friends/allies. Elelments: E, F, W, A, L, I, N/E.

Dimension Wizard: "Manipulation Mage" These magic-users manipulate the Time-Space continuum for the benefit of themselves or others. They can learn to teleport, time travel, hover, and many other useful  things that offset thier apparently weak magics. Elements: T, S,  N/E

Summoner: "Dependent Mage", They use entrapment magics to capture a powerful being, force it to do their bidding, and set it free. Good summoning requires that you get along with the being. This will reduce the cost of summoning by not having to entrap it. Elements: All

Warlock: "Evil Mage", Vile magikers who use thier powers only to cause harm to others. Their powers stem from the darkness in the human spirit. Elements: D, C

Technomancer Classes

Apprentice Technomancer is a level one class.