Depends on the job you want to level.
Tanks/healers best to do roulettes -> levelling dungeons -> Palace of the Dead -> fates/hunting logs. Though pre level 16 hunting logs/guildhests/fates.

Dps however Roulettes-> Palace of the Dead -> levelling dungeons -> fayes/hunting logs. Pre 16 again hunting logs/guildhests/fates.

While waiting in any queue do fates/logs and at lv 43-49 ARR beast tribes at 50-59 HW beast tribes at 60-69 SB beast tribes and 70+ ShB beast tribe