Making money from airdrops is alot easier than most people think. All you basically have to do is refer alot of people and complete a couple of tasks. The best thing to do is open a group on telegram or WhatsApp or wherever and invite people who are also interested in making money from airdrops. From that point on it's pretty easy, keep posting the airdrop links in the group and watch as every member uses your referral link for every airdrop.

Take note that airdrops can be a real hit or miss, some coins blow up days after the coin has been distributed, some take week, months and even years, while others simply never reach their final ICO prices so it's important to study the coin that's being airdropped and decide for yourself if it has potential. You can start by checking if it's listed on sites like icobench and check it's rating there.