Well, if you are pretty much a beginner, I would say go with whatever is cheapest. Ash, poor man's oak, is generally not particularly hard. I have used a lot of poplar and alder with my adventures in learning how to use hand planes. Fairly cheap and they cut easily. Walnut dulls ALL tools faster than most other woods. It also makes me sneeze and itch, so I don't turn it any more. FOG wood, found on ground, is usually available for the taking, and as others have said, green wood just cuts so easily. If you know of any fire wood yards, ask them for some wood, and/or buy some. Since I am mostly a bowl turner, I go for whole logs. There is a lot of cherry back there. Hackberry is not really a good fire wood. Black locust and osage are both very hard, even when green. Poplar/cottonwood can be pretty stinky and not good for firewood either. Fresh walnut can be nice to turn. Redbud can be kind of stringy and difficult to get to turn clean, but it works. Just depends on what you can find. Check with local arborists, they usually have to dump a lot of wood. You will eventually need to get a chainsaw too. Depends on what you want to turn. For spindles, southern yellow pine is nice. Once you start looking for wood, it is everywhere....
robo hippy