All other factors comes after this . If you invest in any alt coin without knowing its market value then there are more chances of getting loss then that of profit . There are thousands of altcoins in the market ,choosing the best ones is the foremost task for trading . Other than that I would say that bitcoin is most trustworthy coin as compared to others so you must start with bitcoin .
Certainly, it is a simple process, but for a trader who is not ready to leave their funds in alts for so long, I have always believed that cutting losses at a certain percentage is just the best thing to always do and look for a better alternative to trade.
Yes I observed one thing the professionals in trading they will not choose a reputed coins to make a profit. They will target one shitcoin and make others invest in that coin and afterwards, suddenly they will sell and make a profit. That is why don't buy any shitcoins if the profit comes late also no problem buy only a reputed coins.