The mantra in trading is buy low and sell high so if I see a coin have an incoming update, I do a technical analysis on that coin and determine some key prices like support and resistance. If the coin reach support and the indicators suggest a buy then I would buy it and set a stop loss. It is important to have a stop loss so that in case there is a dump to that coin then you already set an amount of how much you are willing to lose.

I subscribe to some group that give some free trading signals. I know that it is not a wise thing to do because many of them are scam but there are some legit signals too. I don't often follow their signals but since they are the one who are mostly updated to the latest developments then I would check it first if they have not pump it before giving the signals to its members.