Hello HF!
FIRSTLY I spent hours trying to get as much info as I could to make it easier for you. Then spent quite some time on this tutorial; the least you could do is say thank you. 2,700 views and only a few respond : (.

Today I have been really bored and never once have I gained control over someones Facebook. So I decided to try it and It worked! So far I have gained 6 different Facebook logins 1 friend and 5 girls I rarely speak to! I wouldn't really call this a Facebook hack but stealing their Facebook since you aren't really using any code or glitch in the system, but you are gaining control over someones Facebook so without further adieu How to Steal Someones Facebook Account.

Here is how to do it:

Step one:
To get the Facebook users e-mail go to yahoo.com and click "Sign in" then choose "Sign in with Facebook".
Spoiler (Click to View)

Step two:
Click "Okay"
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Step three:
Click "Continue".
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Step four:
Choose "Contacts" from the left lower menu bar.
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Now Don't click "New Contact" I will fix the image later! Click "Import Contacts" then choose Facebook.
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Step five:
This one is a little longer. You probably know your close friends good enough to get their security question correct but how about them technology challenged sexy bitches you never speak to? Well in this case them being technologically challenged is helpful to you. Most of the time (At least in my case) their e-mails are dead! This is great! All you have to do is re-create the EXACT same email they had and recover the password. For example lets say their email was "[email protected]" re-create it as "[email protected]".
"You can only create a new one if their email was recycled. If it hasn't you have to go through the security steps to reset the emails password."

Alright a few things I have learned in my hours of testing:

Good

1. Yahoo emails are mostly inactive.
2. Hotmail emails that have 2010 and below are usually inactive.
3. Most common questions are "Who was your best childhood friend?" and "What was the name of your first pet?" Just check their page and find the answer most of the time.

Bad

1. If it is @yahoo.com it probably doesn't have a security question which means no good (unless it is inactive).
2. You have to pass the "Who is this?" quiz on FB.
3. You have to have them added.

Tips:

1. The answer to "Who was your best childhood friend?" is most likely in most of their photos.
2. Nah that's about it.

Thanks for taking the time to read and good luck getting those accounts!