This isnt like Windows. When you were in anaconda before the actual install you were asked a root password. This is your administrator account. You can either log in as
user: root (the actual word "root" here!)
password: YOUR ROOT PASSWORD
EDIT: I am also obligated to put in the warning disclaimer here- You do not want to preform day to day operations in the root account! In fact, I wouldnt even come into this account unless I had to, then I would get back out as fast as possible. Another little trick I do is set my wallpaper in this root account to a bright red. This is a constant reminder I am root and should be very very careful!
or, while using your user account (the one under your name) you can open a terminal and type:
Code:
$ su -
password: YOUR ROOT PASSWORD
#
the pound sign shows you are now root. You can also set up a sudo link like ubuntu if you prefer that.