Once installed, open the Dimensions Development Library (DDL) by clicking Start > Programs > Dimensions Development Library > Documentation.
The window seen below should now appear. The content is extensive and very detailed. The tree "view" (left pane) works exactly like Windows Explorer. As you drill down through the tree structure, you'll find resources which will help you at every level.

Drill down through the tree structure to find DDL resources.
Click image to enlarge.
It's worthwhile to browse the tree, because it contains a lot of information on the Dimensions Data Model™, Dimensions Scripting, mrStudio™, mrTables™, mrInterview™, and DimensionNet™—right down to detailed programmer's documentation at the individual object level.
You can also view a folder containing all of the example code, scripts, data files, and executables.
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