Amazon’s KDP Select is a boon for many authors. You can offer your fiction for free, for a few days. You’ll get downloads, readers, and eventually buyers.
You don’t need to restrict your freebies to KDP Select, however.
Look at what Kris is doing here, Free Fiction Monday: Tribute « Kristine Kathryn Rusch:
“‘Tribute,’ by World Fantasy Award winner Kristine Kathryn Rusch is free in its entirety on this site for one week only. It’s also available for $2.99 from Amazon, Barnes & Noble, Smashwords, and in other e-bookstores.”
Kris is offering her fiction free on her blog, and she does it every week.
Do you think it increases her ebook sales?
Think about how you might offer some free material — material which is selling on Amazon, but is available for free on your site, for a limited time.
Also, consider writing some short material, and publishing that. The more you have available to sell, the more you will sell.