OK, I know everyone keeps going on about Tarren Mill, but I have mates on Doomhammer. Plus I am a 16th level druid, I;d look a right pussy standing next to level 70 warlocks, paladins and shamans.
My take on druids - basically an all rounder. If Druids were a premiership player they'd be William Gallas - can do a job in defence or midfield if push comes to shove.
At level 10 you get 'bear form' which means you are the equivalent of a warrior. You have decent healing/protection spells, but a bit limited in armour and weapons.
After that I'd go for a shaman, pretty good at fighting with decent spells. At higher leveks can turn into Ghost wolf and walk on water.
I;d saty away from warriors, I think they are boring personally.