Is createEnumeration part of the oooBasic language?

Is createEnumeration a kind of standard methods in oooBasic?

Could someone link me an usefull BEGINNERS tutorial page where it is basically explained?

(I am sheer beginner in all programming languages)

No, createEnumeration does not belong to the language Basic itself, but is a method of class collection for example. http://docs.libreoffice.org/forms/html/classCollection.html

The language Basic has only very few own functions. Nearly all what you do in Basic belongs to the document. You can inspect the objects using Xray to see, what properties, methods, services and interfaces exists for this object.