Each and every mistake is easy to fix once you know how. Each chapter begins with a diagram containing solutions to punctuation problems that may have eluded you for years, including tricky apostrophes, dashes and semicolons.
From Chapter 9, Semicolonic Cleansing: “Semicolons are punctuation bling. They look flashy and like to strut their stuff. But much of the time, novice writers just stuff them up.”