So many people have old cuckoo clocks that would be too expensive to take to a clock repairer. This book nicely fills the gap, going through what you need to do to completely overhaul your cuckoo clock. It's the only modern book I've found on cuckoo clock repair, and is thorough, well-written, and as promised, simple. The main skill you need is patience and a methodical point of view, and your cuckoo will be singing again.