Do the Scarlet Monastery up till 32 and swap to Scarlet Library until 38 and then swap to Sm Cathedral up until 45 and then swap to Zul'Farrak up till 50, do all the elite quests in hinterlands (if you're horde) and do the searing gorge quests up until 52 (you can also do the quests in Felwood too) and from there grind the Brd circle up until 56 and swap to Bael'Gar gauntlent up until 60. Focus on "of the eagle" gear and go full arcane.


Hope this helps.