Step 1 – If your facebook account is not connected with Yahoo id then first Create an email id in yahoo and connect your facebook account with yahoo Email Id .
Step 2 -Now Login to Yahoo Mail and then go to the Contacts Tab.
Step 3 – Click on Import Contatcs.
Step 4 – Now Click on Facebook .
Step 5 - In Pop Up You will get Message that Do you want to Share your Contacts with Yahoo ! Click on OK .
Step 6 – Now you will get Message
Step 7 – Thats it ! Click on View imported contacts and See you facebook friends Email Ids 
