Mel, that is some great advice. Obviously the train I showed in the video is not what I will run normally, but was fun to get going. In a small room, I have short sidings, and as most of us way more engines and cars than I have room for on the layout. Switching out trains and switching cars onto and off sidings should prove to be fun as those of us with new layouts will find out.
Dennis, I forgot to state that I worked out some of the kinks in the mainline and associated switches just running different engines by themselves or running a long car through by hand. I was tired, but couldn't sleep when I wrote in the wee hours of the morning. 
You made great progress on your layout and as you state a lot of what I have planned next will come in '22.
