I assure that not only to newbies but to those who are not aware of trading bitcoins is also dangerous to them because if they dont know how to gain profit, they can not earn much in the trading bitcoins in the market.
For a newbie, the first thing you should do is to research which is the most important thing. Always keep in mind that everything can be solved through researching. Search unfamiliar words, do not argue with somebody without having background knowledge on it.