Khopshef Province is a better zone to start in due to the fact the terrain is open. For example, Conall's Valley has winding mountainous paths that sometimes are confusing to navigate. If you don't know where you're going to, you can get lost easily and aoc gold waste time looking for stuff. Wild lands are kind of more open like Khopshef.

When you first zone into Khopshef you'll find the city Bubshur. There is a Topless bind lady. You must find her and bind. It is for sure that you can run around and get all of the quests. It is better to start here at 20 some quest won't be available to you at 19 but you can get rolling at 19 as well if you didn't quite get 20. Start doing your quest there is NPC you'll find along the way that will offer more quests.
In the middle of the zone is a town to get more quests called Carnival something. We do not recommend going there till 22 or 23, we are not sure when you can start getting quests for sure but at those levels you could get some. In effect you can run and aoc gold do all the quests. And also you can plot your course in a clockwise or counterclockwise fashion due to the openness of the zone. Not sure if this was due to exp increasing or the fact initially we started out with more people in the group around the low 20's, less exp for actually killing stuff. I find that a group more than 3 people seems to drop exp a lot unless u can find an area with a concentration of mobs.
You can head back to one of the other level 20-30 areas if you use the quests up and can't find more till you hit 30. Even if they are grey quest, they still net the same exp and aoc gold it's pretty decent for leveling, plus the mobs die fast. Another nice thing is you can explore these zones being a bit higher level than the mobs and clear the quests fast. One problem is that a grey quest will not light up for you. Even if the quest is grey you can still get it by speaking with NPC. Once you have the quest everything will light up appropriately.

30-40 is tough. There're the quests at the pyramid you can get that will get you to 35 hopefully and aoc gold there is the borderlands an instance off wild lands to the east. Still though get them grey quests done. At about level 38 you can probably start getting the level 40- 50 stuff. Once they fix these dungeons it is possible to net more exp in the 30's. There wasn't much use of going in these during beta. There are the sewers of Old Tarantia you can hit at level 35 or sooner. They are right off the docks in Old Tarantia. There are a couple quests you can get and aoc gold there are a lot of concentrated mobs to grind on in there.