You need to start with new coins. Read articles couple what coins will grow in prices this year or assume. Then sell then when that moment comes and buy larger coins and then make a profit on them.
That doesn't work always.
New coins are risky. They tend to go zero if something goes wrong and I have seen many of it.
If not zero then it will be lower than what is expected from the ICO price.
Better go to the trusted one and join the fluctuation. You will just need to learn on when it could happen instead going from the start to a new coin looking for legitimacy and much about it.
Ethereum is a good choice. Fluctuates heavily and a chance for 10 percent profit is always there.