You may have already given out your website address and for that reason you may want to have a holding page on your site whilst you work on it.
If you do decide on using a coming soon page I suggest you don’t have it on for too long, once you have a home page created I would take it off so that you can submit your website to Google and they can start crawling the website. It won’t get featured in Google’s listings overnight so the sooner you submit the sooner Google will start picking it up.
This video shows you how to add a coming soon/hodling page to your website and how to switch it off when you are ready to have your site seen – and remember get it out there it doesn’t have to be perfect and you don’t have to officially launch it until you are ready!