Do your own research and don't just rely on only one article that said that the prices of the said coins will be good. Do your own research on each coin and also, how do you know that this coin will yield a good profit margin, what's the basis for that, what's your evidence? There should be an evidence right?
DYOR is very much important, taking the hype of people in consideration without taking out time to confirm things for your self will bring noting but failed investment, there is every need to confirm every news heard before taking action, make sure you got a vital reason for investing in a coin or project. Most project just launch with a good marketing strategy and sell off without any utility, such project or coin won't last. Researches helps us to choose the best and remain profitable.