Self-Editing for Writers by Harvey Stanbrough
Price: $2.99 USD. 3510 words.
Published on September 13, 2011. Nonfiction.
Avoid the most common errors this editor has seen over 15 years of freelance editing. This is a compilation of notes on punctuation, grammar, sentence structure, usage, etc. that cover the most common errors I've seen in over 15 years of editing. This, combined with The Seven Writerly Sins, would comprise what not to do if you want to be a successful writer.