Spark: The Definitive Guide is most popular book about spark in oreilly.com, Learn how to use, deploy, and maintain Apache Spark with this comprehensive guide, written by the creators of the open-source cluster-computing framework. With an emphasis on improvements and new features in Spark 2.0. You’ll explore the basic operations and common functions of Spark’s structured APIs, as well as Structured Streaming, a new high-level API for building end-to-end streaming applications.

This is step by step guide to download Spark: The Definitive Guide
1). Download and install Safari Online Downloader, it run like a browser, user sign in safari online in webpage, find book “Spark: The Definitive Guide” to download and open it.
2). Find book to download, click “Reading” button to open book.
2). User open book in downloader, wait until “Download” button is ready, click download button to download ebook, it takes a while.
3). Downloader go through all book pages , it takes a while.
4). new PDF file created when finished, it saved in My document folder, “doc\ebook converter\safari online downloader\” .