This chapter discusses different types of textbook study guide structures that can help increase student learning and understanding. It describes study guides as providing explicit tools to help comprehend textbooks. Several structures are discussed including main idea, list, order, compare and contrast, cause and effect, problem solution, and analogy. Each structure is meant to target different reading skills, content acquisition abilities, or fall between the two. Specific examples are provided for most structures. The chapter conveys that study guides can help improve test scores and allow English language learners to meet requirements when used effectively.