It is very important that you do not run your network cables near other cables, behind television sets or radios. The Electromagnetic signals will interfere with the communication between devices. EMI as it s called can cause the loss or corruption of data. Unless you really need to run your network over 500 meters, this is not a good choice for a home network. The extra equipment needed and the cable itself is expensive.
Crosstalk is the term used for overflow of signal across cables.
Shielded twisted pair is twisted pair wiring but covered with protective foil, making it less susceptible to crosstalk. Both carry a signal over 100 meters. UTP and STP are connected through a Hub. Your network will set laid out in a star fashion. One advantage of running a star network is the network will not go down if a machine goes down.