William H. Reusch, emeritus professor at Michigan State University, published his Introduction to Organic Chemistry in 1977. Readers may purchase it for a list price of $137.74; or they may access the Virtual Textbook of Organic Chemistry, which contains nearly the same information online, for free, on this surprisingly comprehensive website. Here readers will find a fully operational organic chemistry textbook, divided into the two overarching topics of General Principles and Functional Group Reactions. Within General Principles, readers will learn the basics of Structure & Bonding, Intermolecular Forces, Chemical Reactivity, Aromaticity, and other subjects. Functional Group Reactions covers Alkanes, Alkenes, Alkynes, Alcohols, and many other subjects. For readers looking for a comprehensive, freely available organic chemistry textbook, this site will be a true boon.