The "Getting Started" section gives you information on how to install and set-up the development enviroment:

After you completed this section, it is recomended to go through the chapters "Designing Templates in MS Word" and "Programmer's Guide" where you will get in-depth understanding of all Docentric concepts. But if you are kind of a person who generally likes to learn from examples, then skip it and jump directly to the "Examples" chapter. Examples will lead you through all the basic concepts step-by-step and should suffice for the average use of the toolkit.