Create your account and answer eight questions about your game. Everything else — your club gapping, your dispersion, your short-game priors — is derived from these and shown back to you to correct. You can come back and edit any of it later from your account page.
Real password, real account, stored in caddiebrain.net's own database (passwords are hashed, never stored in plain text). No payment processing exists yet, so every account is given access to the guides that already exist — see your account page once you're signed in for your guides and to edit these numbers later.