There is no specific way on how to hack a Facebook account. Some people posted several articles or videos about the process of hacking a Facebook account, but most of these articles and videos will ask you to download a specific application first. Here’s a piece of unsolicited advice: Don’t download anything because most of these applications contain virus that can steal all the information stored on your device.
The most common way for you to hack another person’s Facebook account is to simply guess his or her password and then you can go from there. If you also know the e-mail associated with a person’s Facebook account, you can simply click “Forgot password” and then reset his or her password.