help: script with choices to run another script

Hi guys, I'm not too good in scripting, actually I just edit few items and go with it.

If someone has a free time maybe they can help me make a script(using it for android, to be run on terminal)

what the script does?:

1.greets and explains what the script does
2.lays out the choices on which script to run next(probably 4 choices)
3.run the selected script
4.if possible, upon exiting from the new script, return to the original(this one)

I'd appreciate any kind of help.

Thanks.

What have you tried so far?