Hickory or white oak stave - very forgiving materials... Osage is best, but chasing rings is a learned skill that takes some time. Picking out a good red oak board was tough for me, when I was making my first ones. Initial success in making a shooting, functioning bow should be your goal right now. Staves were easier for me and Jawge's site got me started and will be a good resource for you. I don't remember ever breaking a hickory or white oak stave bow. If you mess up, it may end up with lots of set, but I doubt it would break. Lots of good advice above. Just get started and have fun with it.