eBook Download Option in WordPress

I need upload a eBook in my blog : [login to view URL] I will offer a FREE eBook in my blog . It should be very GOOD visible in site that people may attract to download the eBook . When they click on GET THIS BOOK FREE button they need to like my Facebook page and then book will download automatically . This is not a tough job for a WordPress expert, as, it need to install a plugin only. There are so many free plugins are available. I will provide the eBook .. So, just need to install a plugin and setup. I just need a neat, professional look . Thanks