I know this is an old question. However my reply maybe helpful for someone.

I passed the 70-466 exam with the help of; - http://www.selftestsoftware.com/certtestprep/practice-test/microsoft/70-466.kap.

Continual reference to; - https://www.microsoft.com/learning/en-us/exam-70-466.aspx

Books; -

SQL Server Analysis Services 2012 Cube Development Cookbook

By: Baya Dewald; Paul Turley; Steve Hughes

Publisher: Packt Publishing

Pub. Date: December 26, 2013

Print ISBN-13: 978-1-84968-980-9

Microsoft® SQL Server® 2012 Analysis Services: The BISM Tabular Model

By: Marco Russo, Alberto Ferrari, and Chris Webb

Publisher: Microsoft Press

Last Updated: 19-APR-2015

Pub. Date: July 15, 2012 (Estimated)

Print ISBN: 978-0-7356-7009-9

Professional Microsoft SQL Server 2012 Reporting Services

By: Paul Turley; Robert M. Bruckner; Thiago Silva; Ken Withee; Grant Paisley

Publisher: Wrox

Pub. Date: June 5, 2012

Print ISBN: 978-1-118-10111-7

Working through the following tutorials; -

https://msdn.microsoft.com/en-us/library/hh231701.aspx?f=255&MSPPError=-2147217396

https://msdn.microsoft.com/en-us/library/bb522859(v=sql.105).aspx

I hope this helps.

Kind Regards,

Kieran.