If you are trying to start a non profit organization with no money at all I suggest using fiscal sponsorship.
If your still not sure.....
I have placed a useful step by step guide link in my bio that you can check out.
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talk to a football club. if you start off by Cheerleading for them, they'll let you use their field. have a general tryout and start stuff off slow. don't expect too much to begin with. once you gain respect and creditability you'll be able to get funding and afford a proper gym to get into the serious stuff.