Domain name registrars function as marketplaces to buy and sometimes host your website name. Just like with any online purchase, you'll need to go through the registration and check out process. Once you have a domain name, you'll need to point your domain information to your hosting provider. If that sounds too baffling - contact the support. They'll surely know how to do it.
In particular, Web Hosting Hub uses BoldGrid as a site builder. BoldGrid is actually an add-on to WordPress, so there's no lock-in. This overcomes the major problem of most site builders: you're locked into that host and that tool, often requiring you to completely rebuild your site if you want to expand. By using a WordPress-based solution, all of the rather considerable power of WordPress is available for future expansion.
Many web hosting services offer a low "starting price," but require you to prepay for two or three years of service to get that price. After the promotional period, the renewal price for some web hosting services can be two, three, or even four times the initial promotional pricing. While the initial deal might be incredible, the cost of transferring your site (or paying the added fee) in a couple of years may be something to consider.
We use this analogy on our web hosting page. Shared hosting is like an apartment building – lots of residents in the same building, sharing the same resources, but also very affordable. Dedicated servers are like having your state-of-the-art house, where you’ll pay a lot more, but you also don’t have to share the space or utilities with anyone. VPS is in the middle, like a townhouse, where you have a few residents in the same building, but you each have dedicated resources and are in full control of your home. It costs less than a dedicated server, but still gives you much of the same benefits.
A Content Distribution Network (CDN) is a network of servers distributed geographically. The purpose of a CDN is to deliver content on the internet much faster. If a user in Toronto is trying to access your website, the closest server to them will take care of this. But someone coming to your website from Sydney, Australia, will be catered to by a server closest to them. The main host server holds your website content, and all the other servers have a cached version each.