What if somebody will make a huge dump and sell it all the way to earn some profits because of this rally in bitcoin,and someone sees it and do that same thing. Is there any effect on bitcoin when someone to this,?
You just need to buy coins at a low price and wait a while. Here after a couple of months you can get a small profit from purchased coins at a low price.
The timing will be after a big rise there will a big dump also so buy in deep. It is much better to buy as much as you can afford but not all of your funds .