Model Railroader Wiring Your Layout is everything a model railroader needs to know about wiring with DC. Chapter 1 Introduction to Wiring introduces you to the meaning of some of the more common electrical terms.

Chapter 2 explains how a basic circuit works. There is an explanation of how locomotives, the power pack, the track, and the connecting wires interact. The 3^rd chapter covers turnouts, switches, and crossings and how to wire them so that the train runs smoothly. 

Chapter 4 of Model Railroader Wiring Your Layout gets into the more complicated wiring of sidings and spurs. It shows you how to wire them so that they work independently. There are detailed diagrams on how to wire them. Chapter 5 explains the wiring of a double track so that trains can run independently and how to wire the crossovers to move the trains from track to track. 

Chapter 6 explains reversing loops and wyes. Reversing loops require much more complicated wire schemes. It gives you information with diagrams on how to detect and wire a reversing loop situation on your railroad. For me it was one of the most complicated aspects of wiring my model railroads. Chapter 7 gives you the information so that you can independently control your locomotives on different configuration of track. How do you wire a round around, a yard ladder? The mystery is revealed in this chapter. 

Chapter 8 of Model Railroader Wiring Your Layout goes into the more complicated wiring of turntable, control panels and cabling. There are explanations on how to wire in two power packs for multiple track configurations. It also details the wiring under the layout so that it is neat and easy to troubleshoot. 

Chapter 9 gives you detailed examples of wiring for your layout. The diagrams include complicated track configurations. Chapter 10 discusses other electrical possibilities such as meters, signals, lighting, switch machine control, etc. Chapter 11 defines schematic symbols for wiring your layout. 

Model Railroader Wiring Your Layout is a must to help you wire your DC layout. Many of the concepts also apply to DCC.