You should learn it in the first place, when you first bought your coin, it always been buy low sell high, or HODL until you are in a profit, we are always talking about profit, whether we are in a bear or a bull market, but on top of that invest on something worth investing you will never realize profit until you learn how to choose the right coin to invest and how to build a good portfolio, there's money to be made on a bear and in bull, timing is everything.