Hi Katy! Congrats on your purchase of a pair of radios! The basics of what you need to know (1) how to turn it on/off, (2) how to charge it or change batteries, (3) how to turn up/ down the volume, and (4) how to change channels. On the 3rd item, depending on the type of radio, you may have an option to add a 'Code' to the channel.
Play around with them, but do Google the manufacturer make/ model of the radios -- each one is different -- as it might not be inherently obvious as to what your radio capabilities are. If they are fancy, it's actually harder since it's sometimes easy to get lost in the menu structure. Your best bet to learn them is to use them!. Which neighborhood are you with? The local NETs would be able to show you how to use your radio. In fact, we'll be practicing with radios at the Arbor Lodge Kenton NET team monthly April Meeting (April 18th). You are welcome to practice with us.
-Susan Ronning, Team Lead, Arbor Lodge Kenton NET