It's been said but I'll reiterate a couple that most applied to me:
1) There is such a thing as too much smoke.
2) Only open the cooker when you have to. Tell anyone that wants to look that they'll have to wait an hour or two...
"Yeah, but bacon tastes gooood. Pork chops taste gooood" -Pulp Fiction
Weber Smokey Mountain
Weber 22.5" One Touch Silver
Charbroil Silver Smoker w/ mods (never used anymore)