Giveaways get used for two primary reasons: (1) to drive customer reviews and (2) to build email newsletter lists so you can market other (paid) books to readers. You need a clear strategy in place to benefit from giveaways. BookFunnel and StoryOrigin are two services to help facilitate digital giveaways. Print giveaways should be used sparingly due to cost.

• For more on giveaway strategy: https://www.janefriedman.com/book-giveaways/
• To learn about advertising giveaways: https://nicholaserik.com/promo-sites/

You can also get very creative with community giveaways. Learn about community marketing.