Thank you, Bruce --
I believe at the time I asked this, I (possibly unfortunately) went ahead and attempted to make it so that all permissions were basically not allowed, since I didn't know any better at that time and i hadn't seen your reply.
Now, it appears, i need to reset the permissions. it would be great to understand them better:
1. Is there a tutorial in particular that might explain what the settings mean in the different categories (i.e., group,etc.) that will help me understand what setting a 4 or 7 will allow (or disallow) for that particular group?
2. Also: what if I wanted to post my web pages but didn't want them accessed yet? or, in a diff case, as in a blog, i want to allow visitors to remark, but not be able to change the original content. (which i would expect the diff values in each group would have something to say about that...)
Is there a missive somewhere in the forums that i've missed? When I search for "Site permissions" or just "permissions" i get this blog.
What should i be searching for?
(sorry, re-read your post and understand that that answers part of my #2 question, thank you.)