Although the author has tried to write a book for people of all abilities, this is not a good book for the absolute beginner.
The author assumes a knowledge of clock functions and a familiarity with technical expressions that the beginner won't have. Although there are some sections dealing with very basic things, e.g. "How to oil a clock", Mr Penman is soon on about "verge flags" and "lantern pinions" or casually suggesting that we solder new teeth into damaged cogs or make our own replacement parts.
I needed a basic book to tell me how to clean, lubricate and adjust my mantle clock. Sadly, I soon got completely bogged down in this one.