This is an Apple II User's Guide Book by Lon Poole, published in 1981. It provides comprehensive and detailed information on how to use this vintage computing device. The book is well used.

The guide is specifically designed for Apple II users who want to explore the full potential of this technology. It includes detailed information on the hardware and software of the device, troubleshooting tips, and step-by-step instructions on how to use different features. Whether you are a collector or a vintage computing enthusiast, this Apple II User's Guide Book is a must-have.