In England, Rule 1 is refered to as the general term “Rule 8” there really are no other rules other than that term that I have found. I am indoors so my process is a little different, but I think their fairly universal. These are my building rules:
Assess the available space for the layout
Take your time planning your layout
Try as many variations and approaches as possible
Assess your plans, one will always be your favorite, go with that.
Be patient, build at your own pace.
Make sure your ready to lay track down before you do it
Make sure your track is clean and the joiners are tight, I use conductive lube, others dont.
Once track is down, test for power conductivity, block control etc.
Test a sample of every type of rolling stock to check for clearances.
When you find a problem, dont be tempted to “just live with it” FIX IT
My Wife Shop’s for me, some of her additions to my RR are F-3 ABBA, Bridgeworks 15 amp, and Boxs of SS track. I do very well by her AND She would know how much I spent.
My wife is a solid supporter of the GRR. She was very instrumental in the original design and the expansions. She has made most of the building selections, all of the vegetation selection; she has selected and positioned over half of the citizens of Rosebud Falls. My daughter and son-in-law have also contributed to the equipment roster. They were both very outspoken on which trains they wanted in “free/automatic” running during their wedding reception. If at all possible I would suggest making the GRR a family affair.