This is a simple question.
How can you browse sections ? As a standard user (WITH read permissions to the sections) I only have an overview over my workspaces, I can't browse to the sections. How do I do this ?
Is your user is member of the “member” group?
If not by default your user will not have access to the default-domain (parent of the root of sections) and so will have no access to sections.
My piece of advice to set up you user as member of this “member” group is because by default, “member” users have read access to the root of the document repository. And so section.
Hope this is the simple solution for your simple question :)