HI,
I endorse Gary's method coming from a different perspective. I owned a WSM long before I knew of Gary or heard of the internet. I was influenced to buy a smoker by a Russian woman who bought one instead of a grill. She and her husband were cooking exotic smoked ducks and salmon in the late 1970's. I happened to come upon a WSM at the Lake Forest Ace marked down for end of season. It was just out of beta testing, my instruction manual was a double-sided piece of paper marked 'preliminary.'
Most of first efforts at smoking were pieced together based on Ella's advice and the preliminary instructions. I'd do goofy things I wouldn't dream of today: saved tea bags to scent the water pan (as if it makes a bit of difference). I soaked wood chips to allow them to smolder longer, which I now know creates bitter tasting creosote. More often than not damaged my not so great fire by the water pan falling into it. Yet having nothing to compare it to, my guests were impressed, that or they discussed how awful it was on the way home. Eventually my WSM just languished on the patio, eventually the bottom bowl rusted out, which I didn't know until I contemplated beta class one.
At functions, I began to hear of people buyng WSMs and taking a BBQ class from Gary. I jumped on that quickly, because it was either use my WSM or take it to the curb. A wee $30 investment to replace the bottom, Gary's instructions for cook one and I was off. Mind you, he wouldn't give you the next class until each step was completed to his satisfaction. In less than a month, I was making better BBQ than I had in the 20 years I owned my WSM. His method of using wood charcoal and wood chunks was counter to Weber's where they had you use briquets and soak wood chips. Since I did not use my WSM very much, there was no routine or bad habits I needed to shake off.
One of the greatest gifts of the program is the intuitive sense you develop for how your cook is progressing. I almost never use a thermometer, though I look it over, poke it and maybe twist a rib. I like not having to feel compelled to babysit the smoker, because it is doing its job while I shop or prepare the rest of the meal. No need to ask my friends to keep me company as I monitor the cook. No reason to play BBQ techie with multiple thermometers reporting information to central command. I am confident the WSM is doing well, because Gary's method convinced me to leave it well enough alone.
Not that I wasn't overly analytical initially, I just needed experience under my belt to settle me down. Fortunately, the method is freely available to anyone who wants it via his book.
Regards,