for newbies the most important thing is to use small capital. then you can look for trading tutorials on youtube or on this forum and look for a lot of information. learn to trade with small money because you are a beginner don't be afraid to lose, because that's part of a success.
the first thing you do is pick a coin, buy it at the lowest possible price and sell fast when the price is high, do it continuously. it is a classic trading technique, simple and easy to do for newbie