there are many ways. You can invest in ICOs, buy altcoins and hodl them, participate in Bounty and Airdrop. Choose what you like and go on
Helll sir many ways but they scam, how do you know that you're not fooled by ico? Many times it happened to me that even though their website was a team but still scam, then how to know the token Is that a real future that you can hold?