Dear Sir, I think you are looking for a professional Digital Marketer. Who can promote your ebook professionally. I am a professional Digital Marketer. I have a lot of experience in this filed last three years.
I will promote your ebookl. 20 Facebook groups, 50 twitter trends, 10 Linkedin groups, 10 quora backlinks , 10 pinterest pin.
It is the organic way to get more sell of any products/ebook.