Questions about RPG Maker XP

1. Does anyone know how to do "world map". For those who don't know what world map is, and then I'll explain. When you play RPG games, you often jump into "world map" so called. World map makes you capable to zoom out but the main character (selected character) will stay in a larger form. You will be able to walk around (as in if everything was zoomed out) so each mile would be 2-5 steps in world map...

Download a World map tileset, like Inqs, which you can find HERE.

Then construct the world map like any other map.

3. Can anyone tell me about how to use script...?

Open up the script editor, right click on Main, select insert.
On the blank page, paste your script.

5. How can I save my game and show to others by sending via mail or any other way...?

Encrypt it.

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The others will be included in the demo I am working on for you, or they have been answered by Goodlookinguy.