Now you have two metal pieces that touch when you push. The rest is obvious. You're going to have to do some work to get it simple to run, but it can be a challenging and rewarding task. In this schematic, figure 3, note that their are many LED's indicating turnout position, but only enough push buttons for route selection. The push buttons are the small circles with a number or letter inscribed.
All turnouts are of the power routing kind, enhanced with extra contacts on the switch machines.
It saves a handfull of toggle switchs. This is amazingly easy to do with cross connected contacts or slave relays as shown in figure 4. Imagine a train pulls all the way into the track via the aligned switch at one end, then simply by aligning the other end also, the block is split and the yard goat can come in from the rear to do work while you disconnect the power and head for the roundhouse. Each time you do this, it eliminates two toggle switchs. The second floating boundry is marked by an oval to the left.