No leveling guide can be complete and all inclusive. If it was you would spend more time reading it than you would spend leveling. So whith that in mind, this guide will show the most popular places to level. It does not list every place a druid can level but it will give you a good start.

In some guides people reccomend killing the dwarves in Butcherblock. I do not reccomend this because at one point in your epic you will need to get enchanted clay from a NPC in kaladim. This can be a issue if you have screwed up your faction earlier.

31-34:

Gnolls in South Karana are good experience. Other than fine steel weapons there isn't much good loot here though.

Crazed Goblins In Butcherblock. They are dark blue all the way up to level 34.

Wolves and snow cougars in Iceclad Ocean are good experience at this level. The only downside is the fact that there are a great deal of wandering mobs here including giants. It is not hard to get an add here.

The Griffenes in East Karana are good leveling. Many of the wandering creatures here will not aggro on you. there is plenty of room to move around and plenty of room to run when you need to. If you want you can hunt near the guard tower. If you get into trouble you can run for the guards.

34-36:

You can hunt in the Great Divide at this level. I would just stick to the wolves. The giants have alot more hit points and they give no better experience. Don't mess with the coldain wolves. They give a negative coldain faction hit and when you get higher level you will probably want to try the coldain shawl quest.

Ulthorks in Eastern Wastes. The ulthorks and the Walruses are plentiful near the northern part of the zone. The uthorks drop tusks which can be turned in at the othmir village in Cobalt Scar for gems. They also drop armor but it's not very good armor.

Quadding cougars in Iceclad may be right up your alley at these levels. You need to have a decent mana pool to pull it off but the experience is quite good.

37-40:

Ulthorks are still really popular at these levels. You will find them much easier to kill.

Crystal Caverns is a good place to be both for experience and loot. There is a place right past the first 2 guards where no wandering creatures path. It is good to pull your mob there and kill him so you don't get any adds. The miners here aso drop velium fairly frequently. Velium sells for around 40-60 plat a piece to other players. Don't go too deep in until you get to know the zone well. It is very easy to get lost in here. Nothing in this dungeon see's through invis.

Rygorr Fort in Eastern Wastes is a great camp. You can use your harmony spell to single pull any of them. usually people pull the orcs right past the entrance up to the hill. There are very few wandering mobs that path here. The rygorr Oracles are casters so be careful.

Quadding Drakkel Dire Wolves in Eastern Wastes will be really good xp for yu. One of the best places to do this is near the Iceclad bridge.

When you get closer to level 40 you can begin getting groups in the dreadlands. This can be a very dangerous zone to get around in because several of the creatures see invis here. Finding a group here however is usually not hard it is a very popular place to hunt.