I know it is going to involve you in a lot of reading and poking and prodding to find out how the "system" works, but it is no more difficult, LOL, than if you decided you would take a course at the local college Introduction-To course in anatomy, biology, marketing, banking & finance, Conversational German ...
And if the page you read isn't quite clear enough for you do NOT hesitate to ask about this point or that point ...