Just looking ahead here... there's some information I will need about the devices on which the beta versions will run. Not everyone knows what a UDID is or where to get it, so there's a free little utility in the App Store which will email the information I (the developer) would need about your device to me.
Do a search for a utility app called "Ad Hoc Helper" - it's free, and the icon for it is a black box that says "UDID" on it. Just punch in my email address and it'll send the required information to me (namely, your device's UDID), provided you can hit a wifi that lets you out into the net. I can beta up to 100 folks, so don't go knocking down the door to get to me, heh. You can use
[email protected] -- thanks!