Templates

This refers to the path of the local directory with add-in files.

Application.UserLibraryPath

Application.UserLibraryPath 

Options > VBA Code > Folder Paths

Application.TemplatesPath

This refers to the local Templates directory

Application.TemplatesPath 

Options > VBA Code > Folder Paths

Application.StartupPath

This refers to the local xlstart directory

Application.StartupPath 

Options > VBA Code > Folder Paths
There are no properties to determine the global templates and startup directories.

Application.NetworkTemplatesPath

Application.NetworkTemplatesPath 

Options > VBA Code > Folder Paths

Application.Repeat 

New Workbook

This creates a new empty workbook with the default number of worksheets

Workbooks.Add 

It is possible to create a new workbook that contains just a single worksheet:

Workbooks.Add(xlWBATemplate.xlWBATWorksheet) 

It is also possible to create a new workbook that contains just a single chart sheet:

Workbooks.Add(xlWBATemplate.(xlWBATChart) 

Reference to New Workbook

A better approach is to use the return value from the Add method to create an object variable referring to the workbook.

Dim wbk As Workbook 
Set wbk = Workbooks.Add 
wbk.Range("A2").Value = "some text" 

This can be useful for keeping track of temporary workbooks without the need to save them.

Specific Template

The Add method also lets you specify a template to use for your new workbook.
When the argument is a string specifying the folder location of an existing workbook the new workbook is created using this workbook as the template.

Set wbk = Workbooks.Add (Template:="C:\Temp\"wbkTemplate.xls")