Script to set artboard to selected art, etc.

In my new work I REALLY need to learn Javascript for AI. I am trying to read through the official guide but am impatient.

Can someone create a script that would:

1. Create rectangle based on user input
2. Set artboard to rectangle size
3. Scale rectangle horizontally to 1/4 current size and aligned to right

There is MUCH more I would like the script to do, but I realize I need to learn something and not just ask for someone to do it.

I'm also interested in suggestions for learning Javascript for AI.

Also, what resource would you suggest for hiring a freelance AI/Javascript guru?

Thank you,

Ray