Brand new. I apologize in advance if my questions are really stupid. I'm going to start off with something small and simple. I'm looking at this set-up. Please advise if you can, what does it mean by "blocks". I'll have an EZ Command system, exactly what is it that I have to do at those areas marked "G" at the wyes? Will the Golden Spike ready-to-run N-scale train with DCC command have all the accessories (power) needed to operate this track once the track-pack and extra tracks are added? If not what else will I need? What is the purpose of having 4 "11.25" radius terminal" at those spots specified? Any help is much appreciated.