I agree with Jah about the corncob. They're cheap, they're light weight, they smoke dry (no slurp), and if you only have one, they don't need to "rest" to dry out between smokes. Taken care of, they last a long time. I have one I've been using for two years, and I've heard of guys using them for way longer. I would say only buy Missouri Meeschaum. They have it down to a science.
And if you find you like them, you can buy a quality stem for them. Google Forever Stem.
I would disagree about aromatic tobaccos to start. If you get them a little hot, as you probably will, they can get "slurpy", which is nasty, and will cause tongue bite.