It's a common question. It's better to use the search function and read already existing topics about trading if you really need help. There are a lot of topics about trading you will find.
A few days ago I commented somewhere about it. I am just qouting here to read. Hopefully, it will be helpful for you.
1. Learn and gather more knowledge about crypto.
2. Set a budget for trading.
3. Always start from lower investment
4. Always try to divide your investment into several parts. Don't invest all in one
5. You should also focus on Risk management strategy.
6. Stay updated with the crypto news
7. Control emotion during trading.
8. Learn about technical analysis
9. Always think about long-term investment.
10. Don't panic, don't be greedy, and always try to exit the trade at the right time.