I am thinking about making a troll Druid so could anybody maybe give me some pro's and con's about Druids and give me as much info as I need

Thanks

Do you realize how dumb you sound?

They can tank, heal, range dps, melee dps, what more info do you need. All classes have pros and cons.
Pros-flight form instant cast
Cons-If you want to be versatile at all the specs it is a bunch of gear to keep track of, enchant, gem