There are a lot of free Power BI training options out there for business analysts and there is now training beyond that for your organization. Adam explores the new free training from the MS Stores group as well as recapping other available options.
Microsoft Stores Power BI Intro Training: https://www.microsoft.com/store/workshops-training-and-events/#keyword=Power%20BI
Instructor Led Training: https://powerbi.microsoft.com/instructor-led-training/
Power BI Learn Content: https://docs.microsoft.com/learn/powerplatform/power-bi