Learn Asking questions Course Asking questions How to use Metabase's query builder to ask better questions. Lessons in this Course Lesson 1 Create charts with explorable data Use the query builder in simple and custom questions to create charts that allow people to drill through the data. Start this Lesson Lesson 2 Custom expressions in the notebook editor When you should use custom expressions and why you should take advantage of them in Metabase's notebook editor. Start this Lesson Lesson 3 Joins in Metabase How to join tables in Metabase using the notebook editor in simple and custom questions. Start this Lesson Lesson 4 Multi-level aggregation How to ask questions with multiple parts using the query builder. Start this Lesson Lesson 5 How to compare one time period to another We walk through different ways to compare how a metric peformed from one date range to another. Start this Lesson