There are a lot of details that go into model railroading, so at the very least, it is good to have an understanding of the basics.
Every model railroad needs a theme. Where in the world is your model going to be? What kind of scenery is there? What era in time is it? What kind of technologies have been created so far? This is an important step to decide what kind of scale, railroad, and detail parts you gather throughout the rest of the process of building your model train railroad.
It is time to pick which scale you are going to use for your model railroading. It is important to choose a scale based on the following model railroading tips:
Once a scale and theme have been chosen you can pick the first railroad to be added to your collection. Be sure to choose a railroad to build that is made on the scale that you previously chose and that fits into the theme (era, location, etc).
Now you are ready to build it. Put all your new knowledge about trains, train tracks, electrical wiring, scales, decor, and more to good use and make a model railroad track you can be proud of!