Quantum field theory is arguably the most far-reaching & beautiful physical theory ever constructed with aspects more stringently tested & verified to greater precision than any other theory in physics Unfortunately the subject has gained a notorious reputation for difficulty with forbidding looking mathematics & a peculiar diagrammatic language described in an array of unforgiving weighty textbooks aimed firmly at aspiring professionals However quantum field theory is too important too beautiful & too engaging to be restricted to the professionals This book on quantum field theory is designed to be different It is written by experimental physicists & aims to provide the interested amateur with a bridge from undergraduate physics to quantum field theory The imagined reader is a gifted amateur possessing a curious & adaptable mind looking to be told an entertaining & intellectually stimulating story but who will not feel patronised if a few mathematical niceties are spelled out in detail Using numerous worked examples diagrams & careful physically motivated explanations this book will smooth the path towards understanding the radically different & revolutionary view of the physical world that quantum field theory provides & which all physicists should have the opportunity to experience