I believe that's the model with the 10 weather channels. There should be a push button that says "weather" push it in, then you keep searching the weather channels until you hear the weather caster, I usually leave it on each channel for several seconds to give it a chance to pull in the channel. That's the best feature.
Channel 19 on the CB side, is the "trucker/travel" channel. This is a channel that you can ask how the traffic is moving in a certain area ahead of you. I usually stay off of that unless I'm sitting in traffic and wonder what the hold up is, normally there's too much profanity on there for me.
Once you meet up with another person you want to "run" with, the both of you will decide on a channel, both tune to that channel, then you can talk to each other over the radio. The good thing about this is, if you are the front vehicle, and there is debris in the road, you can warn the vehicle behind you.
The radio is also the mike, so as you hold it in your hand, you press the big button on the side to talk, release it to listen.
Once you find someone that has a radio they can show you better, but it is a good device to have. Or next time you're in a truck stop, ask a trucker that has a little grey. They're usually nice and will show you if they have time. My CB is usually off, but it's nice to have it when I need it.