Blueprints for Requester/Provider train system. There are three books: 1. Single Size Network - use if all your trains are the same length and you don't plan on changing that 2. Multi Size Network - use if you want to use different train lengths, e.g. 1-4 and 1-1 (any sizes/combinations) 3. Loading & Unloading - few simple examples of loading/unloading for 1-4 trains. Shows how to connect the chests via green wire to the first electric pole.