do you have suggestions , how to avoid mistakes in trading and take less risk ?
and what need to learn for be a good trader ?
Successful trading takes time. There is also risk, always, and it needs to be defined and controlled. As soon you as you cap your risk, you invite the possibility of losing trades (stop loss being reached), but ironically that is more likely to make your profitable since the losses are small and controlled.
The first priority should be your best knowledge of trading that will guide you the best and you will never ask from others about suggestions. However the trading has few important steps, choose a valuable coin in a low market, place the coin in any of the exchanges for example Binance, Coinbase and Bitrex etc. Make your decisions with good care and in the light of market rules. The best trading coin should be Bitcoin as this is the most valuable coin and if you buy at low market then you will get huge profit at high market.