When people here that crypto trading can be helpful to make lot of money in very wuick time then they will jump into it without knowing enough knowledge.
They even don't know about wallets and exchange and at the end they will lose all their money and blame cryptos.
The most important part of the knowledge is to learn about safety(security), most investors do not even know what a hardware wallet is, how to use it or even how to purchase it, this should be the first things to learn as a cryptocurrency investor, how to protect your coins and keep them yours, if you have sufficiently acquired that knowledge, you can then step up to learn how to trade(probably paper trading )before investing