I had a nagging question: how do I build copy in the admin, check it in the real site but not allow people to see it until I am sure it is all correct.
Of course it's simple and likely 100% of you knew this already, but just in case you are like me and didn't quite know, this is it:
create a page but don't click 'Publish'
on the page's Settings tab click 'Hidden'
publish the page
edit it as much as you like
click 'Save + Keep Unpublished'
log out, login, re-read your copy after a nice walk to see if you can improve it
want to see your page in-situ (as it will look when it's visible)? Click 'View' and you see a private, unpublished but as-it-would-look version of the page as it is now
repeat 4. and 5. as much as you like until you're ready to release your masterpiece, at which point just un-tick 'Hidden' and re-save click 'Publish'.
Update: edited above as it's even easier than I realized, thanks Ryan for correcting me
Happy editing.