So, I was just wondering how could i consider/know when to buy a coin if i want to since i am also planning to invest some money on ETH. I understand the fact that we buy if the price is low or if you can see that you can gain profit from it but what i mean is that how could i know that the price is already low or it's enough for me to gain profit. I have been visiting some site daily to check every coins price but i dont know if the price is fair enough for me.
Yeah, that feeling of not knowing if the price is low or not is....uh...kind of the point. If you knew that the price was at the bottom, this investing thing would be easy and everyone would be rich! The world doesn't work that way. And predicting the price of Bitcoin or other crypto currency is very difficult, it's impossible really.
The best thing is to decide if you believe in the future growth/value of the coin then you should buy some, today. That's your starting point, your cost basis. If the price goes down but you still believe in the future growth/value, buy some more. And you're on your way.
That's it, man.