Visit airdrop page to register. You will be automatically redirected to your dashboard. Join Telegram group and submit your username in main dashboard page to get your first 50 shares. You can also submit your ETH address.
Click on social media links on the left menu to complete tasks and earn more shares. For some reason there's a limit of 2 actions per day, so you'll need several days to complete all tasks. Get more shares for inviting people.
Airdrop total distribution is 7,5 million DCO tokens.