Getting Started with SQL Server 2012 Cube Development is very good place start. This books covers the all you need to see what is beneath your data. For many beginners the terms like Cube, OLAP, Dimensions, MDX might be off putting but have interest to take up the Analysis framework; if you are like one as states in above, this book can land you and make the SSAS your comfort-zone.
The first tipping point being the installation, configuration, author has provided a very clear explanation of all steps, dependencies, in a point by point style.
Even the minute details like project view & layouts, cube configuration, data sources, Relationships, etc. hasn't been ignored and covered to the great extent.
The same has been followed for the deployment. There is sufficient theory being provided to have a complete understanding of Technic and scenario rather merely tool usage and development.
Enough light has been lit over the querying aspects of the Analysis cube, various modes, methods pros and cons of the each, using Excel ( 2013 in this books ) to have a 360 degree view of your data in your own way / style in ease. Controlling the access to several users, the schemes of securing and granular control of the assets are clearly explained as well. Performance tuning the need of the hour topic has been explained considering the data, types of analysis been used and methodologies of doing so.
I strongly recommend this book who has already knowledge about SQL, SQL Server and would like to cover the next milestone of SSAS - Cubes and Analysis framework. This book provides good theory of what / when / how and explains the implementation of the same in point by point style.