In this tutorial we will have a try with copy and paste to re-use a part of the track. But beware ... this copy-paste function has its quirks.In many cases creating the copy by hand may be faster and avoids a lot of frustration.
Auran Trainz is a (model) railroad simulator that has really wonderful features and realism. It can be a bit tricky to get to grips with it. This series of tutorials may help to get started with the basics of track laying and driving.