Here are a few things you can do to direct the masses toward your ebook, so that it will get the attention it deserves:

Create a Facebook page – there are millions upon millions of people on Facebook.  Start a page, make friends, join groups, and start telling everyone about your ebook.Create a Website or Blog – having a dedicated site for your ebook is a great marketing tool.  You can share information about your ebook, yourself, and of course use it to direct people to where they can buy your ebook.Create a Marketing Plan – if you don’t want to randomly advertise your ebook, it may be a good idea to come up with a plan first.  Do some research online about marketing plans or get a program that will show you how to grow your fanbase on social media. 
There are several programs that can assist you with online marketing, but if you want a great program that will help you build a social media presence on Facebook, you can find one here.