Hi, I'm very new to this, and trying to build a small layout, partly just to try a few things out. I'm planning on working with N gauge, and I want to put it all on a piece of chipboard that I have lying around. I've seen lots of advice on the internet about laying track, and what should be done, and so on, but I remain moderately confused. I've seen some foam moulded (into the shape of the track) underlay from Peco. This looks easy, but is it a good idea, and how ballast be put onto this? Thanks for any advice.