Mastering organic chemistry is no easy task; this comprehensive list of resources from the Master Organic Chemistry website can help. Here readers will find online courses, teaching websites, online textbooks, online quizzes, online exams, and more. Most resources, like Academic "Earth's Organic Chemistry - Structure and Reactivity" and Ian Gould's organic chemistry website at Arizona State University, are free. Some, like David Klein's Organic Chemistry As A Second Language can be purchased from the links on the site. Students looking for Places to Ask Questions will find links to Chemical Forums, while other readers may like to scout the Mastering Organic Chemistry blog, which is updated regularly and addresses such entries as Protecting Groups in Grignard Reactions and Organometallics Are Strong Bases.