There are many threads out there on airdrops, still couldn't find information I was looking.
Where do I find upcoming and ongoing airdrops schedule? Is there any sub section available on this forum?
The easiest way for you to find airdrop is here
airdropalert.com and if you want to find Ico bounty including airdrop project look for here
bountylord.com that is also the link that I've visited when I was looking for airdrop and bounty. From the links I've given above, those are full of details you can join in many airdrops there. I hope that it may help you a lot.