How do you select a second class?

[Bixby]

The level 10 class quest from each guild unlocks the ability to go to the other guilds and obtain their "So you want to be a <best class ever>" quests, which in turn unlocks the ability to switch to <best class ever>.

Go to one of the other guilds and talk to the receptionist. Take the quest. They'll jabber at you for a bit about the class. Take the quest again and tell them you really do want to be a <best class ever>. They'll send you to the guild master. The guild master will jabber some more, then ask you if you're really sure. Say yes again, and you'll get a starter weapon for <best class ever>. Equip it and you are now a <best class ever>. Talk to the guild master again for the <best class ever> level 1 class quest.

[TuriousHD]

Thanks, but how exactly does the two class system work? Do you switch them out, is that what the gear loading option thing is for?

[Conradus]

Thanks, but how exactly does the two class system work? Do you switch them out, is that what the gear loading option thing is for?

Not just "two class"; you can unlock all ninteen classes and switch between them freely. When you equip a weapon/tool, you switch to the class for that weapon/tool. You start each class at level 1, 0 XP and level it separately. When you switch to a class, you'll immediately unequip any items not allowed by your current class and level. Gear Sets allow you to record your current equipment loadout and recall it later. Obviously, when you recall a gear set, you'll immediately change to the class for that gear set, since you'll be equipping the main weapon or tool recorded for that gear set. One of the real advantages of having multiple classes is that you have a limited ability to use class actions you know on other classes in your current class. If you've levelled CNJ some, you can put Cure and Protect on your action list for your Archer, for example.