Interior Mapping Help

[elevationrp]

Hello, I'm wanting to make several interiors for my server. I'm going to start with a prison. However, I'm pretty new to MTA:SA and have no idea where to start with making an interior. Could someone please explain to me where to start. With like setting up the walls, and the floors etc. I quick reply would be much appreciated.

Thanks in advance,

elevationrp

[JR10]

Lol, are you asking for how to map?

There is locations up in the map editor, choose an interior and then start mapping.

Maybe do it in the sky.