Creating

Documents.Add

Creating a new document based on a different template
The new document will become the active document

Application.Documents.Add Template:="C:\Temp\Template.dot" 
                          NewTemplate:= 
                          DocumentType:=wdNewDocumentType.wdNewBlankDocument, _ 
                          Visible:=True) 

Template - The name of the template to be used for the new document. The default is the Normal template
NewTemplate - Whether to open the document as a template. The default is False
DocumentType - The type of new document to create. The default is NewBlankDocument
Visible - Whether the new document is visible. The default is True

Creating a blank document based on the Normal template

Documents.Add 
Set objDocument = Documents.Add 

This method returns the document that was created.

Creating a copy of the active document

Application.Documents.Add Template:=ActiveDocument.FullName