In Bounty and airdrops you can then get the tokens by joining. In Bounty click here
https://bitcointalk.org/index.php?board=238.0 and look for a beautiful ico project and you will go to the Bounty section and there is a form there that you can fill up. in every ico project they have airdrops so they also have a form that you can apply. Thanks.
Of course in that thread you can see all of bounties are running, but you can't participate in all of them. Better you need to learn choose "good bounty" for yourself.