Even if you don't sign up for those web hosts, you should look for services that offer similar features. You'll want a WYSIWYG editor that lets you adjust every page and add images, video, and social links. Plunking down a few extra bucks typically nets you robust ecommerce and search engine optimization (SEO) packages for improved Bing, Google, and Yahoo placement. Most advanced web hosting services include at least one domain name, free of charge, when you sign up.
You can absolutely do that. If you want to upgrade to a paid plan to get some of the features you want, then you can switch at any time through the My Products option in your account or with the help of a GoDaddy Guide. Once you upgrade your site will have all the same customizations and work that you've already put in place, just with the added features. See Website Builder plans and pricing for more info.
When building your site, you’ll want to organize your files into folders according to the structure you want your site to appear in. For example, you might create a folder for your About page that has your main about.html file as well as any related CSS that adds style to your site and other HTML files that support that content. When adding links throughout your site to your site’s pages, you will reference their folder location in the directory where you store your files. How to Make a Website in 10 mins - Simple & Easy