Despite the fact that there are several different cryptocurrencies, each serving different purposes and utilizing slightly variative methods, there is a common set of rules worth following, when dealing with cryptocurrency trading:

learn as much as you can about the blockchain and it’s main principles;
study about the most popular cryptocurrencies and their advantages;
carefully evaluate your possibilities and possible risks;
stay updated about financial and cryptocurrency related news;
create an exchange account for crypto trading specifically;
start off by dealing with smaller amounts to study the market;
always research and keep improving your knowledge;
eventually try trading with larger numbers, implement complex solutions.