Journey Orchestration

If the test status just says something empty like this, does this mean nothing went through to the action?                                                                                    Test status                                                                                                   ...

If there is an error in the action, can I get the error logs for it? I can only see that it error'ed out in the Journey Summary, but not the reason why.

I don't see my schema showing up in the Journey Orchestration menu when I create an event. How come? Do I need a special field in my XDM schema to make it display? 

Can I integrate Journey Orchestration with Campaign Classic?

Can I pass a collection or array of objects as a parameter in an Action?

Where can I find help documents and videos for Journey Orchestration?