To manage the entries of a giveaway: navigate to your account homepage, then click on Entries button pertaining to the giveaway to want to manage.
How to manually pick a winner:
Each person's name links to another page where you can see all of their entries. Click on a person's name, then there will be an option will be on next page to choose them as a winner.
How to randomly pick a winner:
In the entries section of a giveaway, there's a button that says Pick Random Winner. Simply click that.
How to filter entries by actions:
Every single action (i.e. Pinterest follow, Twitter tweet, Facebook visit, etc.) links to another page where you can see all entries that were done using that action. Click on the action you want, then you'll see all entries that were done using that action.
What's the difference between disqualifying and deleting an entry?
If you disqualify an entry: it will still be visible, but it will be excluded from potential winners.
If you delete an entry: it will be permanently delete, but that user can still re-enter.
How to disqualify/delete single or multiple entries:
There's checkboxes to the left of every single entry. Check all the entries that you want, then click the disqualify or delete button.
How to disqualify/delete all entries for a single user:
Click the persons name you want to manage, then there will be an option to disqualify or delete all entries for that person.
How to contact an entrant:
Click on the persons name you want to contact, then there will be a button that says Contact [name].