Been learning a lot about airdrops as a beginner.  I've found http://airdrop-review.com/ to be the best airdrop listing and ranking sites. The layout is very easy. It also seems that all the airdrops that they post are really quick sign ups (ie. Google forms). I've used plenty of other sites and telegram channels, but I've liked Airdrop-Review the most.

Which are you all's favorite sites/sources for airdrops?