Trading is an unpredictable job, thats why it is wise to start trading with a small amount
I think it is even better to start trading with small amounts, as you will make mistakes in the beginning.
If you want to be a good trader you will have to do your own research about the coins you are willing to invest in.
By doing your own research I mean acquiring as much information as you can about the coin you want to buy.
Personally I try to read related articles and also attending to bitcoin meetups.
Recently i discovered some free software that predicts the future market of several coins.
www.cryptoforesight.orgThis should not be your only reference, but still I managed to make some profit using it.
One of the most important things in trading is to never give up, even if you have lost some of your investment.
If you keep trying you will keep learning, a good trader will make mistakes but learn from them every time.