Slim Randles' Saddle Up: A Cowboy's Guide to Writing tells you about everything you need to know about writing. Although he says no one can teach you how to write, he goes ahead and shows you by discussing the various aspects of writing for profit, for magazines, novels, and non-fiction. Slim Randles has been a writer in the newspaper world for a long time and he has also been busy writing fiction and non-fiction for about as long. If anybody knows how to write it is Slim, and he offers some very good advice to other struggling writers in his book.
He explains and shows how to write query letters, a must for any writer, not only for books but magazines, too, with examples. And he follows that up with a guide on interviewing, how to with samples of the art and explains the use of the valuable question "Why." And he tells you to leave your opinions out of the finished product. It isn't you being interviewed. He gives examples of people who may want to be interviewed or at least don't object to it, not only famous authors but almost anyone in any kind of endeavor. And he tells you how to get to the "kernel" of good stuff. And he has some examples of good writing in his book to show you how to do it.
A writer, struggling to be published or not will find some fine advice in this book and I recommend the book to those trying to become, or are already, an author. You just can't have too many books on the art of writing.