Thanks a lot! Now I understand and will use it in your recommended way.
Yours sincerely,
Martin
Thank for your replies.
Sorry, I meant organize (arrange, manage), not order.
So to sum up you have the categories to organize the posts. You have parent-pages to organize the pages. You have other kind of categories to organize your links.
I cannot see the sense, but I am glad it is free and so I should not moan about it. I cannot see the reason, why (when?) should I use pages, when should I use posts?
Users may reply on posts _and_ pages. The link to the pages is not really an answer to my question, sorry.
Yours sincerely,
Martin