Leveling with a new player.

Okay, so my friend recently started playing FFXIV:ARR, and I'm gonna level with him.
Now, I already have a lv50 class, and I don't have quests to do. Normally I would do Fates/Hunting Log etc., but how exactly do I level with him now, if I start a new class? Seeing as I don't have the quests?

play together for dungeons
for the rest do fates or log while he quest

And since you have a adventurer class already 50 you have a 50% exp bonus on any new adventurer class.

This bonus can add up with rested bonus and be a nice boost so you wont fall behind.

You can't really level up with him 100% of the time. He will be doing quests, quests and more quests. And also some exploration, the hunting log and the occasional dungeon. But his pace will be slow.

You will be doing your hunting log and roulettes, with the occasional FATE and guildleve. You can join him in the dungeons, and also help him out on the hunting log and exploration parts. Your 50% experience bonus mean you can level much faster though.

The biggest help you can be to him is to guide him along with any questions he may have. Once he gets to 50 is when you can really start playing together for almost everything, barring only the roulette.