Of course, everyone knows the basic laws of investing
- spend only that amount you can painlessly part
- study, analyze, draw conclusions
- be cautious and if you take the risk you understand all responsibility.
But in the world of cryptocurrency is very often the usual roulette. Some of my friends just got lucky. They did for 10-20 000 without any deep knowledge. They earned it on frankly blind-alley projects.
Everyone has his own path. And there is no universal guide to action for everyone.