There aren't too many quests at your level besides the big one--
The Shards of Fate. You'll want to complete that by level 18-19 so you can unlock more advanced areas with better loot. Gossip in taverns, kill rumor bosses, and look for strong, unique enemies like King Gurguth and Lich (Liches? Lich's? Lichen?).
Town hall quests are always helpful, just go to a city (I prefer New Garand), accept all the quests, then follow a path and do them all in one run. Nets you a good amount of gold and xp and it's a good way to wait for rumor bosses to respawn.
You'll want to collect 450,000 gold by the end of the game for
Hall of Wisdom visions. It's never too early to start grinding.
Irazur Tomb and anywhere with
Ursan are good places to start.
And, finally,
click here and go to the table for a full list of quests ordered by difficulty. See if there are any you missed and go to the wiki for a full walkthrough.