Personally, I do not buy a coin if I do not know anything about it, even if everyone around here is beginning to regret the panic that this is a cool project. I first read about its prospects, what and how, and then I buy for a certain amount of these coins. After all, if you believe people without checking information, you can lose a large amount, which nobody returns to you.
To me as I do not consider myself as expert in trading therefore I most try to invest or trade in such situation where the risk of losing money is not so high. For that I most do trading when I consider the and understand that the bitcoin price is trading too much low and there are less chances of losing money.