Click on the "Resources" tab, then click on "Structure plans". Then click on the desired structure. You will then get a group of sketches with directions on how to build that structure, including printable PDF's of plans (in N scale). I would suggest you start with a simple one like this https://www.trainboard.com/highball/index.php?resources/small-signal-shed.78/ Just follow the directions. Note: These require that you cut out wall sections from styrene or wood. If you can't or won't do that, then you need to build from kits or get ready made.