Creates a new workbook and adds it to the collection, reads the number of workbooks into a variable, and selects all worksheets in the active workbook:

 
Sub workbookAdd()
    Workbooks.Add
    numWorkbooks = Workbooks.Count
    Worksheets.Select
End Sub

1.	Center workbook
2.	Create a new workbook
3.	Get workbook format
4.	To close all open workbooks, use the Close method of the Workbooks collection object.
5.	To close a single workbook, use the Close method of the Workbook object. The Close method accepts three optional arguments (SaveChanges, FileName, and RouteWorkbook).
6.	To save a workbook from a VBA program, use either the Save methods of the Workbook object.
7.	To select the last Workbook object in the collection
8.	Activate work book
9.	Use a String rather than an index value to reference a workbook
10.	Save workbook and close
11.	The Workbooks property is a member of the Application object and returns a reference to the Workbook object specified by the index value given in the parentheses.
12.	Open workbook by name
13.	Close a workbook and save it
14.	Create a workbook and save it as a new file
15.	The distinction between the Workbook and Window objects lies in an additional method that can be used to create a Window object
16.	Open a workbook and then size it to fit just within the application window
17.	Use Application object to save a workbook as a new file
18.	Add a new workbook and save it
19.	arranges the open workbooks in a tiled configuration
20.	maximizes any workbook when it is activated
21.	places the username in the footer of each sheet printed:
22.	Check Whether a Workbook Is Open
23.	Check Whether a Sheet in an Open Workbook Exists
24.	Count the Number of Workbooks in a Directory
25.	Controlling Worksheet Visibility

Creates a new workbook and adds it to the collection, reads the number of workbooks into a variable, and selects all worksheets in the active workbook: : Workbook « Excel « VBA / Excel / Access / Word