Pentaho Business Intelligence Platform is written in Java EE and is Open Source (Comunity Edition), this give you a lot of flexibility if you know how to program in Java. You can apply modifications on the source code as long as you accomplish the license terms.
Before proceed with this tutorial you must have at least a basic background in HTML and JSP.
Customize home page
In Pentaho BI Suite version 3.8.0 the default home page is like this.