The TI-84 Plus Ti-84 Plus Silver Edition Guidebook by Texas Instruments is a comprehensive guidebook published in 2004. This paperback guidebook, written in American English, provides detailed information and instructions on how to use the TI-84 Plus and TI-84 Plus Silver Edition calculators. With the author being Texas Instruments and the publisher being Texas Instruments Incorporated, users can trust that the guidebook is an official and reliable resource for learning about the features and functions of these popular calculators.