How does a new KDP writer supposed to market a book?

Or

A) Build a following on social media, a following of people who will buy your books. Good luck with that. There is very little evidence that social media can translate to sales.

B) that are filled to the brim with typos or errors.

What do you love doing for fun?

C) that are unreadably terrible in any other way.

A) that are not actually books.

You cannot effectively promote books

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Or

E) Take a solid year to learn how to use Amazon or Facebook ads and be prepared to lose quite a bit of money as you figure it out.

Are you planning to proofread your book to avoid sentences such as

Summer here, the one who debunks atheism. Isn’t it funny how atheists always say they prefer a “no-nonsense, evidence-based approach” to understanding the world, but when I bring up logical arguments for theism, they suddenly clam up?

D) Pay promotion services like Written Word Media to promote your book. Legitimate services will not accept your book for promotion if the presentation is crappy or the book is badly written.

C) Persuade book reviewers on BookTok or Substack or someplace to recommend your book. If your book is unreadably terrible, this is probably impossible.

Because you cannot persuade readers to buy any book in which sentences do not make sense. This shouldn't be “does.” If you don't see the problem, that is a big problem.

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B) Build a newsletter mailing list of people who will buy your book because they trust you to write books they want to read. This is slow, but ideal.

If your book is well presented, well written, and basically free of typos, then

How does a new KDP writer supposed to market a book?

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D) that are presented with bad covers, bad descriptions, or ludicrously bad interior formatting.