Someone has told you that they sent you a friend request. How do you find and accept that request?
In the WELCOME dropdown, you will see that you have a notification and a number by Friendship Requests.
Click on the Friendship Requests and this will take you to your profile Friends tab where you can Accept or Deny that request. (Clicking on the Friends tab while in your profile will also show you your requests)
Once you have accepted this Member, they will appear on your profile when you click on the Friends tab and you can Unfriend them at anytime.