Hello,

Today I read through the manual about Zend_ACL. I read all about roles and resources and how you can register them and so on. I have an implementation of the ZF MVC concept running. What I don't understand is what an resource exactly is. Is it an controller? Is it an Action? Is it something in my model?
Can someone explain this to me?

It means anything you want, it's a string identifier.

From the manual:

In most cases, the controller/module will be the resource i think... the action is the privilege, which you can allow or deny to your roles.

So, example:
/blog/article/edit
-> blog = module
-> article = controller
-> edit = action

And then you may have a resource like blog_article and an privilege called "edit".. got it? :P