Quote Originally Posted by metagloria View Post
There's no wrong way to do it, except for one: DO NOT stick with a job until you master it before moving on. Diversify, grow your skill set. You can't really know when to "stop" with a given job unless you refer to a guide.

The three most important abilities in the game are Barefist (Monk), Throw (Ninja) and SShot/Rapid Fire (Hunter).
You're forgetting Dual Wield (Ninja). Really, what abilities are important differ, depending on what kind of character you're trying to build. Throw, for example, is better for those w/ higher magic.