4th Job Information

I'm still painfully limited on my 4th job Aran stuff. Can someone answer the following questions for me:

• Which skills do you get upon advancing?
  
• Out of these, which one needs quests?
  
• I know some skillbooks drop from zakum, are there quests you need to do in order for them to drop?
  
• What is the 4th job advancement like? Does anyone have an SS's of it?
  
• What would be considered the end-game pole arm? A Purple Surfboard? If you're unable to get that, how high of a Diesra would need to be scrolled?
  
• How is Arans control during bigger bosses? (HT and PB)
  
• Does HT's seduce mess with Combo Barrier?
  
• Can someone give me a full bossing 4th job build?
  
• Can Arans BF effectively?
  
• How many times does one need to HP wash to effectively boss?
  
• How fast does an Aran level, and where is the best place to train?
  

Thanks for the answers, guys.