In October update, Microsoft released Financial worksheet as sample data to explore Power BI. MSDN also have some good articles and walkthrough to make different visuals in Power BI on this sample data.
Following Video I recorded to explore Financial worksheet and following steps from one of article on MSDN. Only difference in D365 finance operations and excel is connectivity, rest of things are same. If you able to build dashboard with excel. then you will able to fetch data from D365 for finance and operations and build dashboard on it.
Wish, some day, I build my complete tutorial on Power BI. May that day come, Please enjoy below video. Please subscribe my youtube channel. سررتُ بلقائك
اراك قريبا See you soon.