Kindle App in iPad is great, not only you read Kindle ebook bought at amazon website, but also you can read personal mobi ebook converted from other format in Calibre, for example you bought some ebooks at Sony library,B&N store,  you can read those ebook in Kindle iPad App, this is tutorial how to upload mobi file into Kindle iPad app.

1. Remove drm from epub ebook you bought using ePub drm removal, this is some tutorial,

How to remove drm from acsm file?
How to remove drm from Kobo ebook?
How to remove DRM from Sony Library ebook?

2. Convert new epub to mobi format, Kindle app doesn’t epub format, we can convert epub to mobi format using calibre, this is tutorial,

How to convert epub file to other format using Calibre

3. Connect iPad to computer, run itunes, you can upload mobi file through itunes,select iPad in left panel, then select “Apps” on right panel.

4. Select “Kindle” in Apps list, then click “Add …” button at right-bottom corner, you select mobi file to update to Kindle app in iPad.

5. Enjoin reading in Kindle app ipad.

Spark: The Definitive Guide download to pdf?

Spark: The Definitive Guide is most popular book about spark in, 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.

Oreilly Downloader is tools to download ebook on with 1-click. it download ebook to pdf file, read them on iPad, Kindle, tablet or other device without limitation, user also can print pdf ebook. It is very easy to use, just 1-click to download computer science book on

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\” .

How to download Google Books to PDF?

This is a video tutorials for Google Books Download