In the last few years, services like Kindle Direct Publishing and Lulu have made it incredibly easy for writers to self-publish, which I think is mostly a good thing for writers and readers. Self-publishing enables writers to build and audience and demonstrate their talents, and it puts more voices out there than ever before. Some terrific writers have gotten their start through self-publishing, such as Hugh Howey (Wool) and Andy Weir (The Martian: A Novel).
But self-published books have already acquired a tarnished reputation, and with good reason: They are all-too-often riddled with errors. Spelling mistakes, typos, punctuation misuse, grammar abuse, word confusion, incorrect names and facts–when a reader encounters too many of these in the first few pages of a book, she will stop reading, and with good reason. How can a writer expect readers to pay good money for an unprofessional product? It’s not enough to run a spell-checker. Writers who aspire to the professional level must show some respect for their craft and knowledge of the language that is their medium. They must proofread.
We’ve all seen errors in professionally published books as well, especially e-books, but the amount and types of errors aren’t nearly so egregious. Professional publishing assures the reader that someone has read the book beside the writer and has probably caught most of the major goofs. Self-published writers have to give readers a very good reason to dip their toes in the sea of dreck and seek out their books. They have to be even better than their professionally published competitors.
The bare minimum self-published writers can do is hire a professional proofreader or copyeditor to give their books a thorough vetting. If your book is riddled with errors, your ideas simply won’t shine through.