Welcome to SMF imhungry. I ain't hungry. I just ate the last of the pulled pork I made last weekend. Which means I'll be cravin' more by this weekend.
There are lots of post here about seasoning that smoker. Check them out along with the rest. This place is a smokin' library.
Seasoning a smoker is mainly done to prevent rust for building up on the inside of your smoker. Take a good quality vegetable oil (I use canola oil) wipe down the interior of your smoker (some will use lard or bacon grease) and fire that puppy up. Check your smoker manual-different brands have a recommended temp. for seasoning the smoker. Basically, the oil burns into the open pores of the metal and forms a carbon layer that will protect the metal from rust.