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

A) that are not actually books.

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

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.

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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.

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

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

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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) 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.

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

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Or

Or

You cannot effectively promote books

Why would my husband cheat on me with an ugly fat woman?

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

C) that are unreadably terrible in any other way.

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

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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.