Hi, I worked with most flexible, cost-effective and widely-deployed business intelligence Software for better decision making and reporting Jaspersoft. One of my friend suggested me a good resource in which includes JasperServer Architecture, Introduction to Report Creation using JasperSoft iReport, JsperSoft Sudio, Deploying reports on JasperServer, Multi tenancy Architecture &Olap-Mdx, Cube. This resource further covers OLap basics including Creating and Deploying Cubes, MDX, Report and Dashboard Generation using Cube and Performance tuning of reports and JasperServer. I learnt a lot from there and I am sure it will definitely helps you -- Jaspersoft Video Tutorial