How do I learn to run complex farm machinery and repairs?

You can run most of it now, and it's the complicated machines and the repairs that still stop you. That's not a failing. It's just the part of the skill you haven't reached yet. Every operator who seems fearless with the big equipment stood exactly where you are. Complex machinery rewards patience and understanding over nerve. When you know how a machine actually works, not just which lever to pull, the fear of it fades and the repairs stop being a mystery. Confidence here is built, not born, one system at a time. Pick one machine that intimidates you and learn it deeply this season, whether from the manual, a video, or someone who knows it well. Learn how it works when it's working, so you understand it when it's not. Master one, and the next comes faster. That's how the whole yard stops being intimidating.