Practice the whole unit on two new datasets: Harbor Bikes trips and Northwind Help Desk tickets. Some exercises start with sheets already built, so you can focus on the dashboard, the action or the story; others ask you to answer a question from the finished dashboard.
Use what the unit covered: drop sheets on an edge to place them, use the funnel for a quick filter action or the Actions dialog for full control, pick the right clearing option, and remember that story points keep their own filters.
If you get stuck, the hints go from a nudge to the near-answer. Try to finish without Show answer: these are the moves you'll repeat on every dashboard you build.