If you don't realise the title "Your Joking" is a deliberate mistake ...then you'd better read this book. If you do get the point, but have ever slipped up on when to use an apostrophe in other similar words (like it's and its, or who's and whose), then this is a must have reference book for you to place alongside your Oxford Concise Dictionary. Better known for her horse racing books - she has published seven - Mary Mountier has produced a handy little guide for everyone who still bothers about punctuation and correct English. It's no coincidence that the title is the registered name of a New Zealand racehorse. All the most common mistakes are covered, illustrated by clippings she's been collecting for nearly 20 years, and her own drawings. It's written in non-academic language, with easily understood rules for avoiding mistakes. It includes sections on "Confusing words", which explains when to use "complementary" rather than "complimentary", or "imply" instead of "infer", and "Words to avoid", such as the non-word "agreeance" - heard in the media, if not yet seen written. The book is far from pedantic.
Recognising that language standards are always changing, and in some situations (like texting) don't matter much, Mountier simply makes the point that anyone who wants their writing to be taken seriously needs to follow the rules of English as they are commonly accepted today. The real estate industry and sports writers rate as the most frequent offenders, but examples from weightier publications (unnamed) also feature.