Yes. Has a high moisture content, and needs drying. Not the best in the world, but can be burned.
No, it is not safe to burn. It is toxic.
Yes.
yes
Yes.
Yes.
Yes
Yes, it is safe to burn sassafras and it is commonly burned in many locales.
yes. i don't think so
no it will catch a your house on fire
Yes. Not really great as firewood, but you can burn it.
Yes, it burns very hot. Many find the smell unpleasant, but it is as safe as any other wood to burn.
yes. just be sure it is seasoned (dried) properly. that goes for any wood.