While menu scripts are good for beginners, "3 days into it" is hardly beginner... more like "only 17 days until beginner :D", something like that... get familiar with the default classes and Ruby methods, know what you can do, then attept it.
Well, to not just tell you to go away, and since you requested a fairly easy system, what you'll need is:
- horizontal command window featuring images drawn instead of text commands
- help window fur function explanation
- status window
- custom Scene_Menu scene around all of that
Also, if you're using RMXP, you need a way to draw the map in the background of your scene. RMVX makes that fairly easy.
Well, find out which of those things you can do with the default RM means, and which you need custom-made. I can tell ya every element has been done before and is either in RM** already, or available in the script section, but you'll need some basic scripting knowledge either way to combine them. Come back if you know more precisely what you need help with.
Have fun learning to script - because it is!