When I found a name of an interesting COM object that might become useful (for example, Word.Application; Microsoft.XMLHTTP; ADOX.Catalog), I used google to search for its name. That's now I learned (or not) about possible ways to use it.
Microsoft's
Ole Viewer allows you to browse through the objects you have on your PC and reveal their methods and properties.
This is what I did, but qwerty might have something to add
