Take a look at my new book on the topic of Azure Automation (part of the Azure Essentials series from Microsoft Press). http://blogs.msdn.com/b/microsoft_press/archive/2015/03/06/free-ebook-microsoft-azure-essentials-azure-automation.aspx This is the PDF format released ahead of Epub and Mobi, which will be released later in the month.
Microsoft Azure Essentials: Azure Automation (ISBN 9780735698154), by Michael McKeown. This is the second ebook in Microsoft Press’s free Microsoft Azure Essentials series. Future ebooks will cover specific Azure topics, such as Azure Machine Learning, Azure Websites for Developers, and others.