Risk Tolerance :
Define your trading goals it,s may be short-term or may be long-term gain. If you prefer actively managing trading by market news then the shot trade is the best option for you. Profit and loss depend on the risk high risk may give you a high gain or high loss but a good strategy cover it deeply.
Beginners won't understand this too early. What they need to have is to have more experience and gain more knowledge through it and then this will be learned.
This also includes the amount that they want to trade and to start with because not everyone starts big already and that's the entire process that a beginner should go through.
The problem with some beginner traders is that they usually think that trading at a bigger capital will also gain higher amount of returns. That is a wrong mindset since you can’t expect that trading will certainly be profitable in the end. The reality is, the bigger money you trade, the bigger amount of losses will be. Unless if you become a professional trader, you can always increase the size of your trades.