FOR INTRODUCED AIRDROPS
1. Go to HB Wallet
2. Go to 'Grab Token' -> Choose one token
3. Click 'Request'
4. Wait for a confirmation
5. Your token will appear at the 'Wallet Top'
6. Make sure that you have some Ethers in your HB Wallet. The more Ethers you have, the more tokens that you will be received.
FOR UNFOUNDED AIRDROPS
1. Go to Etherscan
2. Search for your address
3. At 'Token Tracker', click 'View Tokens', choose the token that holding an airdrop event.
4. Copy the contract address
5. Go to HB Wallet, then add that token as a custom token
6. Make sure that you have some Ether in your HB Wallet. The more Ether you have, the more tokens that you will be received.