Ok - the tutorial assumes you are at least a bit familiar with the UI of Share and don't need to be lead through every step. To get to the "Define Rule" segment you have to either navigate into the document library of a site or use the "Repository" menu item to access the global content structure. In such a file/folder list view you can access actions on folders and the action "Manage Rules" leads you to an UI where you can define rulesets.
If you have deployed your model using the AMP / Spring variant in the Maven project, then you will not see the models in the Data Dictionary / Models directory. That folder is only relevant for model XML files that have been uploaded and activated via the "Repository" UI into a running system.
