Hi Lavon,
I totally relate to your post. I jumped in and started teaching workshops maybe within a year of learning EFT, because I was so excited about it. Had I taught many other people? Nope! Just outlined what I wanted to say, found a peaceful venue, and advertised. My first class (co-taught with my husband) had maybe 12 people and it was fantastic. I did have everyone sign a disclaimer, as Gary suggests doing, and as he does in the workshops I've gone to. And yes, I did have to tap on my fear of public speaking, wondering why anyone would pay $$ for listening to me talk, etc. But EFT speaks for itself, and there were some amazing results. Did those people continue using it? I have no idea. Several said they would contact me for private follow-up sessions. None of them did. But at least I put the information out there.
As far as doing it for no charge, I'd gently ask you to reconsider that. I offered one such evening free of charge, and no one showed up. In most Western societies, 'free' = junk, cast-off, non-valuable. You deserve some energetic exchange for your efforts, and a fee is a standard exchange for a service. Believe me, I've struggled with this, too, so I know what you mean there. But do think again about charging something.
I see EFT as a constant learning process. Having learned it in 2001 and regularly practiced/taught it since then, I am still learning about it and feel I always will be. So you may feel you don't know enough, and yet we all learn more about it, all the time, even Gary. Just like with EFT, there are always more 'layers' to the possibilities.