I got a smoker for Father's day about two years ago. Best Present EVER! It is from a company, Smokin-it. Simple electric metal box with wood chip box in bottom and two racks. I have smoked: Turkey, chicken, brisket, salmon, etc. Tonight we had a Tri-tip. Pretty good. Used a local 'Texas rub' and used pecan. Kids and wife devoured it.
I bought Jeff's book (The essential Guide to Real Barbecue, Smoking Meat) shortly after I got the smoker. It has helped a great deal.