You must have a waves wallet, right? So, you do have a bitcoin wallet too. That’s the beauty of waves platform! Now come to the point of getting waves. First of all you can claim from faucet, that’s the only way to get waves for free. You may trade CWV on dex: buy low, sell high. But, you will need waves to trade on dex. The lowest trading fee is 0.003 waves.
You might also get some waves to trade first time on dex. When you have some waves in your wallet you have many other ways to get or earn waves.
Just go for it!!!