Trying to figure out positive and negative rules in membership.

At the moment, there is no distinction between the content we are giving access to for our three subscription levels (monthly, annual, stranger).

Down the road we will, but just in setting it up it’s not needed. At this point, we want everyone to be able to read and comment on our posts. Later, premium features to be added (plugins, pages, drawings, etc.) So I’m wondering with the negative/positive and advance access level rules – do I need to set any rules at this point? Once membership is activated, will everyone have access to the content on pages and posts or will activation bar people from reading posts/pages/homepage and how do we make sure that this does not occur?