Any kind of hard wood, such as oak, will burn for a long time, and is great if you want to keep the coals hot over night so it is easy to get your fire going again in the morning.
Light wood, such as pine, will burn fast, but is great for starting out your fire, and putting on a hard wood once the fire is established.
Buying wood is tricky, preferably get it from someone you know, or a friend of a friend, you know, someone halfway trustworthy. And shop around...The prices vary depending on how experienced the person is at selling wood...In my town you see someone selling a cord of Oak for $450, then down the road you see another cord for $300...so definitely don't jump on the first thing you see unless you know it is a good deal.
at 3:05 PM on Nov. 21, 2008