Hello all the last child has gone and I now have a room to myself. This is all new to me had a old 027 Lionel 35/40 years ago that was my dads. I had thought about N scale because of size but after seeing them i am not sure very small and we have 3 grandkids. So my question is where does one start.? how do you decide on a layout? We live 100 yards rom a very busy BNSF track with 50 to 75 trains a day on them but very straight and boring . I want to be able to do more than run them in circles. Can layouts be built with expansion in mind like a module unit? So many questions here thanks in advance.