Archer - dps range bow
Assassin - dps melee daggers (one of the best dpser's but when high lvl can do alot solo with the right gear)
Barbarian - tank melee poles/axe's
Blademaster - tank/dps melee swords/fists
Cleric - buff+healer+semi dps caster magic swords
Mystic - dps caster (dont know much about this havnt made 1 yet)
Psychic - dps caster orbs (my opinion the strongest dps but also the ezest to die)
Seeker - tank/dps melee swords (dont know much about these either)
Venomancer - tank/dps magic swords (has a pet to semi tank not the greatest unless u have hercules pet highly exspensive)
Wizard - dps caster magic swords
are the class's
farming for profit on jsp not so well thier are ways but would be a bit slow
nirvana+ high Twighlight temple runs are some of the best ways to do it but u will need a pretty nice amount put into characters to do well