Congratulations and Good Luck.

Here are some links to previous posts.  The hiring process is kind of flakey.  I think it has auto generated emails that don't always make sense or don't make it easy for you to follow the process.  Check the email closely to see if there are any other directions.  If none, call the store you applied to and ask for the hiring person.

http://krogerforum.activeboard.com/t60413489/hired-and-confused/

http://krogerforum.activeboard.com/t30337315/just-hired/