If you are currently working on completing or revising your website and don't want users to see the site until you're finished, you can put your it into Off-line mode. This will display a "Coming Soon" page in place of the site, until you're ready to change it back. Here are the steps:
STEP 1: Log in to your website dashboard (if you don't know how to to that, click here). Once you're in, click on the Design tab and click on the Off-line tab.
STEP 2: Check the Enable landing page mode box. You are able to write in your own text for your landing page while your website is in Off-line mode. At the bottom is a sample screenshot of how your landing page will look.
Click Save at the top right.
Voila! Your website is now in Off-line mode.