Punctuation Guide was developed to help people write better in a shorter time, part of the Simply writing and grammar series. Fixing punctuation can make your meaning clear without the days of study to make grammar work for you in the same way. The audiobook identifies the 13 punctuation marks. 3 are critical and that is the focus of this audiobook. Get these right, or as the author says, write them out, and your meaning will be crisp & clear. This is an audiobook that repays relistening and paying close attention. An hour here pays back faster than days of studying grammar.