The first thing you have to do with any but the most basic model train setups is design it. You lay out where you want everything to go – hence the term "layout" came to be used for the resulting model
as well. These days there are a number of programs available to use on computers. I've been using and been very happy with
it. But that wasn't true when I built my last layout. And even the best plan usually has to be changed when things don't
fit. See the expanded My Layout page for an example.