Did you know, that there is a free ebook about OpenShift? Free, like in free beer? You’ll learn the steps necessary to build, deploy, and host a complete real-world application on OpenShift, without having to read long, detailed explanations of the technologies involved.
Though the book uses Python, application examples in other languages are available on GitHub. If you can build web applications, use a command line, and program in Java, Python, Ruby, Node.js, PHP,Perl, you’re ready to get started.
You can even run your own JBoss WildFly or EAP server on it. The book is available in mobi and PDF format and the download has slim 11 MB.

It was written by Steve Pousty (@TheSteve0, visit his blog) and Katie Miller (@codemiller, visit her website). Steve Pousty is a Developer Advocate at Red Hat. Having earned a Ph.D. in Ecology, he’s been mapping since the late 1980s and building applications for over 15 years. Steve has spoken widely on everything from developer evangelism to auto-scaling applications in the cloud. Katie Miller, an OpenShift Developer Advocate at Red Hat, is a polyglot programmer with a penchant for Haskell. A former newspaper journalist, Katie co-founded the Lambda Ladies group for women in functional programming.

Download your free copy today and get started with Red Hat's PaaS offering.

Further Readings:
Open Shift Developers
Getting Started Guide