This skill to trade is a combination of books,  youtube videos, communication w other traders and your own experience. It takes a lot of your time..
But to minimize loss you should learn how to trade, chart, Tech analysis, fundamental analysis and sentiment analysis.
Also I recommend you try to use the trading bots in parallel. It can be good experience for you. Just divide the part of the coins for trading manually, and part for the bot. You can to learn and earn at the same time. For this using I recommend you https://tradesanta.com/en. It's easy to use and I adore their interface.