I want to start trading, but before i start, I am trying to study how everything works.
Can somebody help me to understand what makes prices of Coins and Tokens go up or down?
You will understand that honestly on the way as you progress. Like other people stated here, it's because of demand. Why they buy it? It's because of different reasons, maybe eyeing for long term investment or just taking advantage of the current trend called "hype".
Just continue engaging in the world of trading regularly and soon you will catch up those basic things about trading. Goodluck.