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On her 13th birthday, Samantha was diagnosed with type 2 diabetes. She consulted her mom and her aunt, both of whom also have type 2 diabetes, and decided to go with their strategy of managing diabetes by taking insulin. As a result of participating in an after-­school program at her middle school that focused on health literacy, she learned that she can help manage the level of glucose in her bloodstream by counting her carbohydrate intake, following a diabetic diet, and exercising regularly. But, what exactly should she do? How does she keep track of her carbohy- drate intake? What is a diabetic diet? How long should she exercise and what type of exercise should she do? Samantha is a visual learner, so she turned to her favorite source of media, YouTube, to answer these ques- tions. She found videos from individuals around the world sharing their experiences and tips, doctors (or at least people who have “Dr.” in their YouTube channel names), and government agencies such as the National Institutes of Health, and even video clips from cat lovers who have cats with diabetes. With guidance from the librarian and the health and sci- ence teachers at her school, she assessed the credibility of the information in these videos and even compared their suggestions to some of the print resources that she was able to find at her school library. Now, she knows exactly how to count her carbohydrate level, how to prepare and follow a diabetic diet, and how much (and what) exercise is needed daily. She intends to share her findings with her mom and her aunt, and now she Guide to Health Literacy