VB class/object library

Maybe this will get you started.
http://msdn.microsoft.com/en-us/library/d2tx7z6d.aspx

Not sure if what you want is how to program office from VS or the actual objects of VS you can program, which is more like program the VBE from VBA.

If you just want the reference object for VS
http://msdn.microsoft.com/en-us/library/sh9ywfdk.aspx

In that reference library that I linked to it has a list of all the objects that are built into the language and the methods, properties and events, (if any) for all the objects available in VBA for Excel. I know it's probably not completely complete, but it's as good as.

I'm trying to get a hold of the same sort of set up for the Visual Basic language. I've found this reference library for the Objective-C language. Something pretty much identical for this for VB is what I'm really after.

So for example, to get a message box up in VB you instantiate a MessageBox class and play with the MessageBox object (I think).

That's the only class/object I know from VB though, which you can't really do much with! Which is why I'm keen to get a complete list of all the build in objects/classes.

Also, on a side note, if you know of the same thing for C/C++ then that would be amazing too!

In Visual Studio you can explore the object browser by pressing CTRL + W, J

On MSDN, if I wanted to look at the System.Windows.Forms.Messagebox() class on the .Net 4.0 framework then I would start here and drill down to here.

There should be plenty in there to keep you busy.