This handbook has been designed to walk a user through the process of evaluating an online resource using the Achieve Open Educational Resources (OERs) rubrics, which are hosted on OERCommons.org. The guide shows an Achieve reviewer using, as an example, an object that had not been reviewed at the time of the writing — ALEX Lesson Plan: Fractions on a Number Line. The guide includes step-by-step instructions along with screenshots of the example object during the process of the evaluation. Visit http://www.achieve.org for more.