Recently I found a nice learning resource for Microsoft BI tools : http://msbiacademy.com Here you will find a lot of videos that will cover how to do something that MS BI practitioners need to know. The videos are aproximate no more than 10 minutes each for a specific topic.
There is also a Windows 8 app that you can download from the Windows Store to view the content
The site is created by Rob Kerr. He is a SQL Server MVP and is passionate about helping people use information to make their work a lot easier. He has used Microsoft databases and development tools since he first wrote Microsoft BASIC code to store customer information for his family business at the age of 13.
Thank you Rob!