If you are looking for a way to acquire Cryptocurrencies then there are different ways you can have it.
Trading: you can trade in crypto and earn from there.
Investment: you can buy cryptocurrency and hodle it for a long period of time and it is mature to your satisfaction then you can sell it.
Bounty campaign: you can join any signature campaign and participate in it and earn from there and also from free donators. But investing in it is the best way to acquire.