It is not a go-ahead that you should use Facebook ads.
The best part about Facebook ads is that there are 2 billion monthly
active users
Targeting on Facebook is such a top class
What interests you, job title and what can not
You can custom audiences for your website visitors.
Upload a list and create similar audiences with your custom audience.
Types of ads
You can run ads for
Quality awareness
Lead generation
Drive traffic
Page likes
App installs