To create your own train routes, navigate to the 'Build' menu, select 'Create Route', and choose a base template. You can then lay tracks, place scenery, and incorporate assets to customize your route.

Trainz Simulator 3 features various trains including freight locomotives, passenger trains, and specialty trains like high-speed or historic models. You can find them in the 'Train' selection menu and explore their characteristics.

To operate a train effectively, familiarize yourself with the controls, manage speed and throttle, and pay attention to signals and switches. Practice makes perfect, so spend time in the tutorial and practice scenarios.

Yes, customization is available! To customize your train cars and engines, go to the 'Roller' menu, select a train, and choose 'Edit'. From there, you can alter colors, add decals, and modify train details.

To begin a scenario, follow these steps: 1. From the main menu, select 'Play'. 2. Choose 'Scenarios' from the options. 3. Browse or search for a specific scenario you want to play. 4. Click 'Start' to load and begin.