Putting up a holding page while i build my actual site

I know how to set up a welcome page or under construction page on hostgator or one with cpanel but I am just not sure here. should i try the staging thingy and put that up while i build a page? their welcome page sucks. I mean when people look for my website i want a nice under construction page actually i want to redirect to my ebay page while i build this. where is redirect in here? or should i do a staging page? I know this is really dumb to you folks but I am new to this cloud hosting. i can navigate a cpanel and the wp admin areas but im in limbo here.

There are a lot of WordPress plugins that will do this for you.