Most of the documentation for Rational® Developer for System z® is online. The online help is organized to help you find the right information when and where you need it. Much of the information you need for developing z/OS® applications is located in the help topics Introduction to Rational Developer for System z, Developing z/OS applications and Web service interfaces and Developing COBOL and PL/I applications for Windows®.
To get you started using Rational Developer for System z, you can also browse the information provided in the Welcome Experience, which provides an overview of the product's tools, information about new features, access to online tutorials and sample applications, and access to additional product resources on the World Wide Web.