ヘルプページ

https://support.google.com/looker-studio/#topic=6267740

https://inhouse-plus.jp/category/reporting/

コミュニティフォーラム

https://www.googlecloudcommunity.com/gc/Looker-Studio/bd-p/looker-studio-pro?sjid=18434501326796841541-AP&visit_id=638586121984789219-797576173&p=cloud_forum&rd=1