The Spectrum advanced user guide investigates the intricacies and advanced functionalities of the Spectrum computer system, moving beyond basic operations to explore its full potential for sophisticated users. Written by Adrian C. Dickens, this guide assumes a foundational understanding of the Spectrum and aims to equip users with the knowledge to leverage its more complex features for programming, hardware expansion, and advanced applications. It serves as a technical manual for those seeking to master the system's capabilities.

This book is likely regarded as a technical manual for dedicated Spectrum users seeking to push the boundaries of the system. The subject matter suggests a dense, specialist text aimed at programmers and hardware enthusiasts. Its value would lie in providing in-depth information not readily available in introductory materials, catering to a niche audience interested in the technical underpinnings and advanced applications of the Spectrum computer.