Hi Paul and welcome!
Heat resistant gloves, neoprene gloves (I just went to the store and got the gloves you wash dishes with)and dont forget a good thermometer.
There are some mail order sites for wood chunks if you cant find any locally. Check out the section on using woods that Chris has provided.
Also, a good Weber chimney is invaluable.
When I first got my WSM, I went through Chris's checklist of what you need, and it covers everything.
Your gonna have so much fun...