Then start by picking a location. Find out which fire department has jurisdiction. Tell them what you want to do and ask if it's cool. Get names. Get it in writing if you can. Be ready to drag a few folks down there at 9AM to do a little show for them. Treat it like a read show (safeties, extinguishers, etc) here's some typical problems:
-) "Amateur" - It helps to have your own set of safety codes, try the NAFAA.org performer guidelines.
-) "We don't handle that here" - keep pushing until you get to someone who will take responsibility
-) "Oh that's not legal here" - have them show you the actual codes. If it's true, you may have to re-locate.
-) "Fine, but here's the restrictions..." - they'll do this, try to over restrict you and such. At that point it's something of a negotiation. if they restrict by tool (no juggling), then show them you're safe and pop the juggling on them again later. If they want to have a marshall on duty, that will get expensive; make sure they know you want to 'practice' not 'perform', that helps.