Don't know how to delete my facebook account (Permanent deletion)

1. Log in to Facebook. You need to be logged into account you want to delete.

2. Go to help page link https://www.facebook.com/help/delete_account.

3. Confirm deletion.

4. Wait for 14 days without logging in again. Facebook will clear your information in 14 days term.

This method doesn't delete your facebook account permanelty, however it ensures that you don't have any data on your account which you don't want others to see.  

1. Log in to Facebook. You need to be logged into account you want to delete.

2. Delete your information, i.e. photos, posts, friends, etc. (optional)

3. Change your account name to "DELETED". Go to "General Account Settings", then choose "Name" and "Edit".

4. Change your password to random symbol combination. Go to "General Account Settings", then choose "Password" and "Edit".