okey... am a little bit drunk but will give this a try...

i think switching jobs to learn the abilities you want anf then switching to other jobs is the best way to start. no point mastering a warrior and gaining the abilty eqarmour coz no-one uses that. and no point learing black6 in world one when you cant even get level 6 black magic till world 3! So change job classes alot to start with to make use of the earlier abilities then think about mastering jobs later when theres enough AP around to do it yay me