First, find a bounty campaign that you want to joining in like facebook and twitter bounty, you can check some on this sites:
1. http://bountylord.com/
2. https://bountyplatform.io/
3. https://bitcointalk.org/index.php?board=238.0

After joining an specific bounty, read the rules of every bounty you are in. Example rule are:

Everyone has to report their Retweets and Likes every week.
You have to 3 retweet and 2 tweet  in Privelege official  twitter account with hash tag #Privelege per week.
To help with this, we will add dates on the Twitter spreadsheet on weeks.

after that, your stakes will be given after each week.

happy doing bounties my friend.