First of all, I am brand-new to using WordPress as a CMS, so I would truly appreciate any advice. I am redesigning the website for a local public library (http://browncounty.lib.in.us/) completely and using WordPress to do so.
My main question is, how I should go about building my site without it being live? I'd like for the old site to stay up while I work on the new one, but does this mean I have to create a sandbox? Or is there a built-in functionality of WordPress that would allow me to edit a new site in its entirety then post it after it has been checked over by the librarians I am working with? (I am used to blogging with WordPress and being able to save things without posting them.) I'm sure this seems basic but I want to make sure I go about building my site in the easiest way possible, and I'm a little confused.