Well you can invest a little amount of money and hope that you can make profit. I heard that it will take time in order to make profit of altcoins. They will pump up the price and then you need to sell them. Thats how trading works i heard once that a guy had made 3 million dollars just with investing in altcoins. So its truly profitable.
altcoin trading is different from altcoin investment, with investment you have less risk and you can hope that your coin will go very high and do a good return, with trading there is a higher risk because you play against the market on a daily basis