There are many ways in which you can get your website up and running real quick. One of the recommeded ways is using WordPress to build your website. You don't need to download anything on your Mac when you have a hosting package with us. We do not do web development therefore we do not do support on web development. You can sign up for AfriDesign whereby an affiliated company will do your web development for you. Otherwise you can download video tutorials on how to build a website using WordPress. Please find below steps on how to install WordPress on your domain:
Log onto cPanel
Scroll down Software/Services
Look for Softaculous and click on it.
Choose any CMS that you would like to use or try WordPress.
AfriDesign Link: https://www.afrihost.com/site/product/afridesign?src=website_nav
Everything will be installed for you on the server and after the installation you will see a page with all the details you going to need to access the backend of the CMS where you will be building your website.