We are very pleased to welcome Alberto Ferrari and Marco Russo, authors of popular, selling-out books about PowerPivot, DAX, and, just-published this month, Microsoft SQL Server 2012 Analysis Services: The BISM Tabular Mode. When not writing a book, or recording a video, they offer BI consulting services at sqlbi.com.

Alberto and Marco are world-renowned for their in-depth knowledge of SSAS, and they would like to share their skills with you, no matter how advanced you are, through our brand-new, online video learning series focused on Data Analysis Expressions. To help you get started, Alberto has recorded a free, 20-minute video, DAX in Action!, in which he shows how to build a formula for a DAX calculated measure that lets you count the number of repeat, active customers who have made a purchase—watch it here. We will be adding additional modules to this series, so make sure to register, so that we can let you know when new content has been added.

As projectbotticelli.com has just turned 1 year old, we are happy to offer a birthday celebration promotion to welcome Alberto and Marco online. We would like to offer a 10% discount on individual 1-month, 3-month, and annual memberships, and also on annual group memberships (not valid for group 1-month and 3-month memberships, as those are already discounted). Please use code 1stBIRTHDAY at checkout, but hurry, this code is valid only until the end of August 2012.