thanks hankshmi, so what we play this weekend will be wiped. So let me get this right, after finishing a quest at 20 I can gain another 15 levels by speaking with the appropriate npc?
You can go from level 1 to 15 on any (and every) job by talking to the NPCs listed. So you could go 1-15 on say, THM, but you couldn't level THM to 20 and then go 20 to 35.
how about going from like 20-25 anything like that or is there just quick leveling for those jobs to 15?
You can go from 26 to 29 by talking to the Wandering Minstrel, located outside of the Grand Companies in every major city. There might be a pre-req (I believe you have to complete the Maw of Toto-Rak dungeon).