Limb wood is very unlikely to be useful as a furniture or joinery wood, i.e., boarded up, stickered and dried: limb wood is generally full of stress (reaction wood) and liable to distortion, even at the conversion phase. These are small parts anyway, and because of that, unlikely to yield any really usable boards. But you may well find uses for it to carve or turn on the lathe. In that case, deciding whether or not to dry it depends what effect you're after. Wet wood carves and turns significantly easier than dry wood, and the distortion, cracking etc, that occurs after either process can be used to aesthetic advantage. On the other hand, you might split the limbs into halves or quarters as others have suggested, let the stuff dry somewhat, and then sculpt or turn it. Slainte.
