The recipes covered in Spring Roo 1.1 Cookbook are applicable to version 1.1.3, 1.1.4 and 1.1.5 version of Spring Roo. The Spring Roo 1.2 is currently in the milestone release, and it's final release will come sometime in December or early next year. Here, a few of my recommendations when going through recipes in Spring Roo 1.1 Cookbook:
1 - Use Spring Roo 1.1.5 when working with recipes described in Spring Roo 1.1 Cookbook.
2 - Don't do copy-paste of commands from eBook to Roo shell. Instead, type it yourself on the Roo shell (you don't need to type everything because Roo offers auto-completion feature)
3 - If you are evaluating Spring Roo for developing an application which makes use of a set of technologies or frameworks, then pay close attention to 'How it works...' section, which describes what all configuration and code is generated by Spring Roo.
4 - If you are using Spring Roo to learn a technology, it is important to focus on 'How it works...' section.
5 - Be prepared to write code or customize the Roo-generated code. A lot of recipes show what to customize and how to customize Roo-generated code.