I'd like to recommend a book for you. If you follow the lessons and do what he says, in five lessons you'll KNOW your cooker. I downloaded a free Kindle app on my laptop and bought the Kindle version from Amazon: Low & Slow: Master the Art of Barbecue in 5 Easy Lessons. Rush, Colleen; Wiviott, Gary. Perseus Books Group. Kindle Edition.
He's not for everyone because he's kinda brash and fairly direct but I assure you, if you do what he says you will become a VERY accomplished cook VERY quickly.
Also, there's a secret handshake for WSM owners. For all you conspiracy folks, you should know that every President of the United States owned a WSM. We WSM owners are apart of a secret society of... Just kidding. It's a great smoker. I have some ribs in my WSM now. They've been going rock solid at 275 for 3 hours now.
In all due respect, If you spend time on the Virtual Weber bullet site, you won't need to invest in the Low & Slow book. While the book teaches you 5 lessons for smoking, the same information is located on this site as well as the Virtual bullet site I bought the book and didn't bother finishing it. Just my personal opinion here.