Creating a custom map for Farming Simulator 25 sounds like an exciting project! Starting with a Sample Mod Map is a great idea to understand the basics and see how everything works in-game.
It's important to stay updated with the latest version of your map, so thanks for sharing the correction in Version 1.0.0.1 regarding the sound.xml on Line 7. Small details like that can make a big difference in the overall gameplay experience.
Watching tutorials is an excellent way to learn the ins and outs of modding. The YouTube link you provided seems to be a great resource for beginners to get started with modding in Farming Simulator 25. Following along with video tutorials can help you understand the process step by step and give you practical insights into creating your map.
Remember, don't hesitate to ask questions or seek help from the community if you encounter any challenges during your modding journey. Good luck with your map creation, and have fun exploring the world of modding in Farming Simulator 25!