study dear. lots of informational vids on YT. there's binance university. many articles on google. study and u will do well, dont be laxy and expect others to shate their knowledge

How do I know when to sell? I'm just starting out and I don't know when I can sell. What if I sell and then the currency goes up a lot? For example, if I invested 50 and earned another 50, should I sell?