Pre-registration is not required, but makes it easier for us to assure that adequate course materials are available.
You are welcome to sit in on the first class session and decide at the end whether to pay the $25 registration fee. See here for details, including the double-your-money back satisfaction guarantee.
"No theory is too false, no fable too absurd, no superstition too degrading for acceptance when it has become embedded in common belief."
- Henry George