One of the best ways to lvl up to 60 is using the Squadron. No queue time and they are fast.

Before you can use them it's hunting log, combat leve quests and fates until lvl 15, then you queue up for your first dungeon.

You should get the bonus exp ring from the hall of novice. At lvl 16 you can do leveling roulette.

Squadron should be available from lvl 20 to 60 I think.

Without squadron you should queue up for the highest lvl dungeon you can enter and do fates, hunting log, beast tribe quests and daylie hunt while you are waiting.

At lvl 50 you are unlocking more roulettes, do them every day. Well, the 50/60/70 roulette isn't really worth the time, but you get some poetics to buy gear. And MSQ roulette gives many exp, but oh well...

The lvl 50, 60 and 70 dungeons don't give much exp anyway, you should skip them and for example queue up for the lvl 47 dungeon until you hit lvl 51.

From 71 to 80 you can level with the Trust system. They are slow, but you don't have to wait for a tank and healer.