Okay, time for a wall of text from Adrillf about fire poi, it's been a long time coming and it's all going to be based with your last three and VERY IMPORTANT questions.
1-Along with the poi itself, what else should I be purchasing?
2-Fire permit?
3-Where is it okay to spin?
#1- Along with the poi itself, what else should I be purchasing?
Fuel, a lighter, and protection. What type of protection? At the bare minimum I would say that you need to buy a fire blanket and a small fire extinguisher. We're hoping that you're never going to really have to worry about it, but if anything does go wrong you don't want to just stand there and watch something go up in flames. Small fire extinguishers can be bought from car and boat stores. You really should have these on hand just in case anything goes wrong, and no matter how long you spin, they're a great investment to have around you. At the same time while you're thinking about protection, I'd seriously consider investing in a set of clothes that you spin fire in. That way you won't feel bad for those clothes smelling like smoke, having slight burn marks on them, or anything else happening to them. When you're looking for clothes find things that are made out of 100% cotton. 100% cotton is better about repelling flame than synthetics so stick with the natural fibers. Long sleeves and pants are highly recommended as well as possibly something to cover your head so your hair doesn't go up in flames as well as gloves.
#2 Fire permit?
Now this seriously depends on your local law enforcement as well as you. If you're going to be in a public park frequently spinning fire, you might have to get one. When in doubt, go to your local fire station, talk to the firemen, and ask them. They will be able to tell you what you need, and what is required. Most states don't require licensing for at home practice, but many require one for public practice like in parks, and a few require a permit no matter if you're at home or in public. This is where you're going to have to do the research and find out on your own how it is enforced in your area. The excuse of, "sorry officer, I just didn't know" can work, but you're running the very big risk of still getting ticketed.
#3- Where is it okay to spin?
Good places to spin- concrete, wet grass fields with no nearby trees, areas that don't have overhanging branches or ceilings, dirt, asphalt, your drive way.
Bad places to spin- next to cars, inside a normal room with ten foot ceilings, inside almost any building, near bushes, underneath trees, underneath shade structures, on private property that is not your own, in the middle of the street during rush hour, next to people, next to your dog, an area where small children are running around, preschools, Walmart, around or near a fireworks stand, or anywhere close to a gas station.
Normal rules of thumb with picking out a spot for spinning fire.
#1- Do I own this chunk of land? (If it's your private property, you are almost 100% able to spin there without any police action of any sort. If you don't own it, make sure that the property is publicly owned (like parks) or you get the permission of the owner first. Side note to this, parking lots are not public property, you still officially need the permission of an owner to spin in a parking lot, you just have a better chance of getting it, or not even making them worry if you're in their empty parking lot)
#2- Are there any flammable materials within fifteen feet of me? (Do not store your fuel right next to where you spin, walk at least fifteen feet away from where you soak your heads. Also, don't be stupid and spin in dry grass or leaves.)
#3- Look up. Do you have enough clearance to extend your arm and your poi without hitting anything? (Trees, ceilings, overhangs, hot air balloons, whatever, if you can hit them, don't spin there)
#4- Does my internal radar of good and bad tell me this is a good space to spin? (Large empty parking lot- good idea. Full parking lot- bad idea. In the middle of a grass field in a local park- good idea. In the middle of the jogging track in the same park- bad idea. At a luau- good idea. At a concert in the mosh pit- bad idea)
Amen. I thought about putting a wall of text similar to this, but didn't want to bore everyone because my explanations are a bit....... dull i guess. Thanks for this Adrillf!