For me the should have a knowledge about the Bitcoin and Crypto because if they don't have knowledge on btc or crypto, they will not know what they are doing they are not good for buying and selling in btc or crypto. They should read some articles about the two and they should read some threads here for them to find how to buy and sell and invest in the two. Me when I started in this industry I first asked someone who is already in the BTCand Crypto I also read some articles and info on how to earn, how to sell, how to invest, how to trade so I can choose what will I do with my BTC and crpto.