About Visual Basic for Applications
Visual Basic for Applications (VBA) is an implementation of Microsoft's event-driven programming language Visual Basic 6. Visual Basic for Applications enables building user-defined functions (UDFs), automating processes and accessing Windows API and other low-level functionality through dynamic-link libraries (DLLs). It can be used to control many aspects of the host application, including manipulating user interface features, such as menus and toolbars, and working with custom user forms or dialog boxes.
The abbreviation VBA will mainly be used when referring to Visual Basics for Applications.
How to download and install Visual Basic for Applications
How to enable VBA in the different Office programs is described in each program subpage.
Getting started with Visual Basic for Applications
Since Visual Basic is the programming language used in all applications supporting VBA (e.i. Excel, PP, Word etc.), we have made a language introduction at Visual Basic language introduction.
There are a lot of great VBA tutorials online, so if you don't find what you're looking for in this wiki, check them out.
Some useful information when coding can also be found at Tips and tricks for coding.