Setup: blogger, groups, and access rights

Hi experts,
I'm suffering with the installation of a simple EasyBlog Blog! The access-rights must be kind of separated from the registred joomla-user.
1. the Blog must be public (everybody can read the entries), only loged-In "blog-user" can edit
2. registration in EasyBlog is generating a "bloguser", This user can only access his own blog and is not a registred joomla user.
3. the setup for me is quit complicated i would apreciate your help - eg. a step by step directive
With my current setup when i login on EasyBlog: i'm allways getting: "there's no access on private pages"
Regards
Roland