David,
All you need to provide is your name and an email address to sign up for the Free Trial, there is absolutely no credit card required. Once your Free Trial is complete, you will have the opportunity to choose either a yearly or bi-yearly subscription. And if for any reason you are not completely satisfied with the GorillaTrades service during your free trial, simply cancel your subscription and you will not be charged a single penny. If you have any additional questions, please don't hesitate to contact us directly at thegorilla@gorillatrades.com. We look forward to seeing you in the jungle!