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Again, look at the tutorials. (editors depot - browse tutorials) Questions like these are very basic and are almost certainly in a tutorial. But I'll make it easier for you this time
dunno what you really want to accomplish with the 1st question, but radio chopper is very easy:
Create a chopper and give it 1 waypoint (on top of him if you dont want him to move anywhere). Create a trigger (f3 or select it above) and synchronize it (f5) with the waypoint. In the trigger, at None, select Radio Alpha if you want to radio alpha. At text, put Call in chopper, or whatever. Then, give the chopper another waypoint where you want him to move and voilá! In-game you will be able to radio alpha and let the chopper move on.
For outro, select mission at right side of screen and choose outro.
For overview pics, just browse the forums, millions of threads about that.
Also, don't forget to put your editor to Advanced (upper-right corner of the screen). This will make things much easier!
***EDIT***
Don't think so, Armstrong ;D