If you are looking for a tutorial on how to prepare contest quality bbq at home, navigate over to The Hog Blog. Reading through the posts on chicken, ribs, brisket, and pork prep will save you quite a bit of trial and error. The site has a lot of nice pictures and the "how to" posts are quite nicely done.
I especially like the post on chicken preparation. I used to have very good results in the chicken category, but some of my ideas have changed a little after reading Bob's post on chicken thighs.
The post on pork ribs is also noteworthy. I've noticed a developing trend in rib cooking. Many are now cooking their ribs in a pan versus wrapping in foil.
For anyone wondering how to trim a brisket for the first time, his post on brisket trimming will put you the right track.
The site also features many different views of his very nice looking bbq cooking trailer painted my favorite color -- Barbecue Red.