Understanding how much to invest in cryptocurrency is more important than deciding which coins you want to buy. Moreover, how much risk you can take, how long you can hold, how much profit you have target. Research the few you want to buy and get data from cmc if needed. Check the marketcap, volume, supply of that token. Also find the difference between the highest price and the lowest price of that token. Determining how much money to invest in cryptocurrency is an important part of your investment strategy.