Busy day here at the office, as usual (I'm not complaining), but wanted to quickly post this tip: Recruit fans from pre-existing fan bases of comparable authors/books. In other words, locate a book/author within your genre--particularly one on the same or similar topic--and target those fans. For example, you've written a horror novel, so target Stephen King fans. Receiving an endorsement from him would help, but that would be extremely tough to obtain ... so here's another idea: Use Facebook ads to target all users with Stephen King and/or horror books as interest(s). Other ideas: Join Stephen King online communities and recruit there while remaining respectful to all members.
What do you think? Comment here.