If you have dabbled G scale and have some moderate machining, brazing, and silver soldering skills (and equipment), "Building Small Steam Locomotives: A Practical Guide to Making Engines for Garden Gauges", will fill your mind full of wonderful projects that you can accomplish in a few weekends and be very proud of. There-in also sits the only problem with this book. It addresses a very niche type of beginner. If you want to build the engines in Jones' book, you will need a desktop lathe and some practiced skill. Jones falls into the "Adobe Syndrome" a bit - the practice of introducing basic concepts at a beginner level, but then requiring skills beginners wouldn't typically have.
But I gave it four stars?
While Jones may have missed the mark in practically and applicability, he more than made up for it with an honest, entertaining, engaging and clear writing style. Couple that with excellent photography and "Building Small Steam Locomotives" is an inspiring read. While I may have doubt that most readers will actually build Jones' locomotives, I have little doubt that readers will enjoy this book, be happy to have it on the shelf, and move closer to actually building and modeling live steam G gauge. And it will influence the beginners choices in a positive manner.
I'm off to price lathes.
Oh - Jones does make an excellent recommendation that I believe adds immensely to his work. He suggest the reader first build a Ruby before really going on in the book. It's excellent advice. A Ruby is a live steam locomotive kit that can be assembled in a weekend by a novice. The process will teach even a complete beginner they logic, function and terminology of live steam systems. Plus, the Ruby can be the basis of a project from the book. Your favorite search internet engine can lead you to the Ruby.
Great book!