Just like stock, you can invest all your money for a coin code if you really trust. But that would be very dangerous. One can make sure that the coin will not fall down to 0 a day.
The advice is to diversify your portfolio. That will help reduce the risk. You do not earn much but if not lost also much.
well this pretty much requires a simple trait that every human being was born with. and that is common sense. but the thing with others is that some of them get fooled by all of those sugarcoated promises by various tokens or coins which then is fueled by this other trait that humans have which is greed that takes over and removes the common sense from almost anyone. this right here makes investing just enough pretty hard for investors since because of all the sweet talk and greed, the fear of missing out kicks in and makes them invest funds that are more than what they should invest to be able to diversify evenly on still have some funds left for some new promising coins that they might happen to discover. unless a person over experience manages to overcome this problems, then that is when he can truly enjoy the benefits of being in the crypto world specially in this forum.