I got mine yesterday too (Mobi) and started using it today at work. Just a few bits of info since there were no instructions etc.
The cradle has a standard USB cable fixed to it and came with a separate wall charger brick that has a standard mini USB end (not a micro usb like the phone takes) The back of the cradle has a female mini usb opening next to where the USB cord comes out. The standard USB that is fixed to the cradle only charges the phone and of course will connect data wise if you plug it into your PC. The mini USB that you have the wall charger for is strictly to charge the extra battery slot that sits behind the phone. That you are supposed to plug into the back of the charger. While I do have an extra battery, swapping batteries is such a PITA I don't plan on using that. I have a wall adapter for the USB cable that's fixed to the cradle can plug into, that's the way I have the cradle hooked up. Plugged into the wall adapter that I already own from my Palm Pilot. I found out that if I try to use my back up app while the phone is plugged into the PC I get an error. So I like using the wall adapter option better. There is a blue light on the right side behind the phone that comes on when you are charging the phone (facing up, nicely hidden flush with the plastic holder) and if you are charging a spare battery, there is a red light on the left also facing up more of an led dome on the surface.
The cradle itself is just okay, the phone sits a little to upright for my liking and of course you need to plug the small cable in from the side. Kind of a pain but I'll be keeping this one at work. I'll get the Seidio for home when it comes out. I'm using a Zagg shield on mine so it fits fine.