If you want to invest in crypto, I think you should invest in BTC, ETH or NEO. But now ETH and NEO are low, you should invest at this time. If you have enough money, invest in BTC. Because BTC is profitable for you.
Bitcoin is also a good source of income and it can double your profit but its risky now days it decreasing its price you can become panic and lose your money. Where ETH and bitcoin cash are increasing.