If you want to get in on the Liquid airdrop, buy some Waves Community Tokens at the Waves Client.
It is an easy to use interface.
Go ahead and register and send some ETH, BTC, or Waves (be sure to click on the Wallet Icon to get your distinct ETH or BTC address, then buy some WCT!!
WCT is Waves Community Token and gets the Liquid Airdrops. Once you have your Liquid, you can hold it or sell it on the Waves Client!