These following links will put you in an area of switches.
What kind, how to use them, etc..
Parts of a switch. 
Builders guide to hand laying track. Builders Guide for Hand Laying
SPDT wiring.

Atlas Snap Switches. https://youtu.be/-U8z-N5M8dw
These following links will put you in an area of switches.
What kind, how to use them, etc..
Parts of a switch. 
Builders guide to hand laying track. Builders Guide for Hand Laying
SPDT wiring.

Atlas Snap Switches. https://youtu.be/-U8z-N5M8dw