PLS could enyone help to understand class modules
as I still dont understand when and how to use theme.
best regards

Classes Modules are where you define your classes and its member variables, properties and methods. It serve to define your objects

Hope this help a little

In Object Orientated programming a class is a blueprint for an object (real world object or abstract object/concept). e.g. if you are modelling a car it may have manufacturer, model, engine capacity etc. as attributes. You can then provide methods to update or access these attributes, and perform other functions on these attributes to make the car class act as you require it to.