Find other coaches with good reputations and get to know them. Ask for their advice. Observe other coaches. Attend games to watch, especially those coached by someone with a good reputation. Get support if you're a woman.
Female coaches are less common than male coaches - and greatly appreciated.
But chances are you'll need extra support and encouragement. Consider whether you have the ability to stay at least one step ahead of those you are coaching - both in knowledge and preparation. Learn the language. Understand the sport you are coaching, including its vocabulary. Use an expert.