OK, activating reverb is a bit tricky. There are two ways they do effects... inserts and Send/Returns. Reverb and chorus are done via send/returns. Generally you record dry and add the reverb as an effect post recording.
To do that, first you need to choose the type of reverb (hall, room, plate, spring) and the parameters. Do that by pressing EFFECT, and on the bottom buttons, there should be one labeled REVERB. That's where you set up the parameters. Now that you have selected your style, press the PAN/EQ button and you should see REV SEND and CHORUS near the bottom of the list. Now you can select the track you have recorded, and adjust the amount of signal to send to the reverb channel.
Think of it as an external reverb chamber. You can send each recorded track to the reverb chamber with different levels, but the basic delay characteristics will be the same.
If you want to have a single track wet, you can run it through the "BOUNCE" operation, which is essentially an mixdown system. Set track 1 with the effect you want, turn on BOUNCE, arm your destination track, and press record and Play. It will process in real time, which will give you a wet track even though you might turn off the reverb processor later, or change the delay time.
I found this tutorial some time back and bookmarked it. It might explain it better that I did.
Hopefully this helps you get started.