In this video, you will learn how to add reference lines to your charts in Google Looker Studio, specifically focusing on metrics and dimensions for marketers. By following along with the tutorial, you will understand how to set a constant value as a target, customize labels, change line colors, and add multiple reference lines to your reports. This practical demonstration will help you visualize and compare data more effectively in your marketing analytics. Highlights: Go to style, select reference line, and set a constant value of $2 million for daily ad spend target Customize label, display value, and change line color Add a second reference line using a metric such as ad spend aggregated by average Compare target ad spend with actual average spend on your Look