yes this is true if you start the trading with the small knowledge and the information then you cannot perform a good trading because you not know about the market analysis in the good way and the result in the case of the lose you should start the trading with the good knowledge which is beneficial for them
and Yes you are right . Little learning is dangerous but some of us like to earn money from trading. They don't like to do hard work for learning. Due to this reason they face the loss of money in trading. So first must learn perfect about Forex trading then choose real trading account for earning. Experience and knowledge are the most important component for earning in Forex trading.