Leveling a DPS class

[Exterium]

Pre 60 yeah, Palace is the fastest way without any doubt, especially for a dps, since you won't have to wait 30 minutes to do it every time.

You're not going to learn how to be a good dps in palace. Yes it will level you quickly but it won't teach you how to play the job. I'd recommend using real dungeons, and fates while you wait for them to pop, at least for your 1st dps job. It may take a little longer due to queue times but it's worth the effort.

He is not going to learn more in sastasha or bryflox than in palace, at least you have all your skills available in palace and you can get used to them, there's enough time to learn a job while you do dungeons to level from 60 to 70. It won't take a little longer tho, it will take massively longer compared to palace if you want to level to 60 doing dungeons nowadays, since everyone is spamming palace and no one is doing fates.