Under construction plugin recommendation

Hello!
As a new wp user, I keep crashing sites all the time.
To keep them closed to the public, I tried several plugins and i kept this:
http://wordpress.org/plugins/underconstruction/
I highly recommend it, it's very simple and you can actually create an html page while you are working in your wp site.

So, if you have a work-in-progress, give it a try!
I hope you find it useful.

Have a nice day!