I was given this advice before publishing my first noveland found it to be true. What sells books for me are book parties. I advertise for them on my website and tell everyone and anyone I meet in a fun conversational way. I've traveled from the West Coast to the East Coast, South and North with parties. Yes, it's expensive, and books sell a lot! Later, more sell too. And added to my selling/marketing is now my videos on ghost busing in San Francisco, book sales went up! How do you sell your books?