Alright, forgive me if this is a dumb question, but I'm not too experienced when it comes to day trading.
So, lets say 100 people buy 10$ worth of a small altcoin; would that not cause it to skyrocket in value? I know that it wouldn't last forever (just a simple pump) but it would probably get pumped enough to allow the original people to sell and get a little cash. Am I right or do I just have no idea what I'm saying?
as my top comment said, it is about the supply and demand.
look at the orderbooks to get some feeling of how much money is needed to push the price up. for example for some altcoins that are big it is about 50
BTC to push the price up less than 5%.
but for some it cane even be 0.1
BTC to push the price up 50%.
after seeing the orderbook remember than not everything can be seen in already open orders. there are bots using the exchange API or using features inside the platform itself that will trigger when the price moves (up or down) and they come in for sell or buy respectively and that will also mean some resistance.