I agree with the idea that we are not to do investments if we don't know anything about it. It is not good to receive any amount of money when you don't even know how everything works. These are a common event when scammers would be promising you to invest in return you will receive double or triple the amount you have invested in. If you do understand how things work then maybe you won't fall against any scam. I don't mean to say cryptocurrency as scams but there are a lot of people who are into it. We should not fall on their tricks. Choose any cryptocurrency to invest in wisely and do a lot of research.