Nicely done, Heliboy! Thank you all for the warm welcome. :) I took pics of the inside of my smoker but have not uploaded them yet. The previous owner gave me two bags of Kingsford Matchlight as she wouldn't be using them anymore, so I used them to fire both parts of the smoker to remove some of the initial rust. I'm just pretending that I'm revitalizing cast iron. So, it's still hot as I type, but once it cools down I'll clean it thoroughly, take some steel wool to the remaining rust, and re-visit the hardware store for some stove paint.
Thanks for the advice! I'll post pictures of the whole process once I'm done.
ETA: Oh, I signed up for the eCourse and ordered the book "Low and Slow."