It is a nice idea of having some smaller and easier set of samples for beginners. Unfortunately, we don't have any right now. I think we can start doing them one by one, and you can take part in the process. Put forward several simple tasks and I will try to illustrate them with small compact code snippets.
For example, this code opens word document from the application startup directory and saves it with another name.
string filename = Application.StartupPath + "\\test.doc";
Document doc = new Document(filename);
doc.Save(System.IO.Path.GetFileNameWithoutExtension(filename) + "_modified.doc");