This particular book was rather helpful to me, for as a writer already, and knowing the pressures and demands (edits, edits, edits, and deadlines, deadlines, deadlines)besides pleasing the client and of course attract the attention of the desired reader---this book is a straightforward how-to on what you need to do inorder to meet and satisfy all the elements when writing a proposal.
The content and context are thorough and easy to understand and follow for someone experienced in proposal writing but also matter-of-fact enough for anyone desiring to dip into this specific field of writing. It also provides basic and general tips that apply to the nature and the art of writing in itself.
All in all this guide was as it's title suggests a how-to/reference for problem solving in proposal writing. I would suggest this to anyone that is interested in writing, and who does not want to restrict themselves to specific genres of writing, and want to make money in other lucrative sectors of the writing market as proposal writing.