I guess by now you have found out that the leveling can be brutally slow in Rift Prime!
There are a few things you should be doing to counter that.
- Closing Rifts and Participating in Zone Events!
- Do your Random PvP Dailys
- Do your Random Dungeon Dailys
All three of these give you considerably more XP than questing!
If you do not do these things you will run into the same problem I had. I was level 15 and finished every quest in Freemarch and in order to continue the Story quests in Granite Falls I had to gain 3 levels which I did quite easily just by doing Daily Random Quests and some Zone events!