Where to start for whom like Model Train
You can start from SCARM ( Simple Computer Aided Railway Modeler), there are a lot of layout samples you can refer: https://www.scarm.info/index.php
With SCARM you can easily create the layout of your dreams. Just download the setup package, install it and start editing your first track plan.
In SCARM you can use unlimited number* of tracks and objects from more than 220 libraries and instantly see your design in 3D preview with a single click.