I need a manual

I've installed FC and FA.
I feel like blind trying to set up those components: changing settings and go to frontend logging in with different level usernames, not working - so I return to backend changing settings.
I need a manual. Its not so easy to set up, I'm just losing my time.

Did you looked at the top on this site?
-> Documentation -> FLEXIaccess -> ...
I know, there's not very much at this time, but this should help you to start.

I don't need to much:
there will be public, register, few level of moderators that will approve articles and last one that will approve and publish.
All moderators can edit article (making diff. versions).
Register users can only read, no pdf, no print.
So, I think that I've configure correctly: create few groups with diff. levels, few users and asign them to groups. In frontend I gave them permission read and wright and just last one can publish.
But I can see where is article for approve? How can I tell that without approving all of moderators article cannot be pass to last one that will publish it? Is there access from frontend for approving and make changes to the article? Which component can I use to make community of employers with messeging system? Maybe you can help me to set this up?

At the moment, there's no notification feature for the version approval
It is coming very soon with the frontend editing feature. There will be a specific frontend view for contributors, with tabs (My items/My items to approve)
Cheers,
Emmanuel.
PS: Don't ask me when I would reply soon