How do I make and preserve wood blanks, for sale, out of medium to large olive tree limbs?

I have 100 year old olive trees here in California. I have to prune heavily and do not want to waste the wood, or burn it.How do I make and preserve wood blanks, for sale, out of medium to large olive tree limbs?
there is a product called anchor seal that is used by 1000's of wood turners and craftsman. You can look up anchor seal on the net.How do I make and preserve wood blanks, for sale, out of medium to large olive tree limbs?
Tree limbs are not as strong as the trunk, so the wood is more for decorative use. If you research on woodworkers.net, you may find the information you want and you may find someone who wants the limbs green, rather than dried and cut.