You probably already have your answer by now, but here it goes. !!Do not log into your Chromebooks when you get them!!! You will have to press Ctrl + Alt + E to get an enrollment login. This is what will tie the Chromebooks to your account.
Your Chrome devices will show up in your Google App console. When you purchased your Chromebooks you were probably asked about your domain name, the devices will show up under that domain. If you haven't already done so you will want to start working on your suborganizations so that you can apply different policies to your chromebooks if needed. For instance you might make a suborg that is the year students graduate. Then you can have different Chromebook policies for High School vs an Elementary school. When you get the device and you register it is the key to licensing them. If you purchased your Chromebooks from Google you will have Mac address and other information about the device. If you got them from a Chromebook vender (CDW or other) this information will not be propagated to your management console. Make sure you take down all the information about each Chromebook before they are deployed so you aren't trying to track down the devices later. Why?
Chromebooks don't really have names, but you might want to have certain Chromebooks receive a certain IP so that they don't get caught in your firewall or content filtering. You will need to know what Chromebook device with X serial number goes with X MAC address.