While the the best of them offer surprising amounts of flexibility, they also impose stringent enough restrictions to page design that you shouldn't be able to create a really bad looking site using one of these services. Typically you can get a Mysite.servicename.com style-url with no commerce abilities for free from one of these services; you have to pay extra for a better URL and the ability to sell. One issue to consider is that if you eventually outgrow one of these services, it can be hard to export your site to a full scale advanced web hosting like Dreamhost or Hostgator. If you know that's where you are eventually going, it may be better to skip the sitebuilder step.
These services can host your content on their servers free of charge, but in exchange for that zero cost, your online destination will have a less-than-elegant domain, such as jeffreylwilson.tumblr.com. That might be fine for a personal blog, but it will look too low-rent for a business that wants people to trust it enough to pay for whatever it's selling.
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.
On most builders you can create your website in less than an hour. We don’t recommend being quite so quickfire about it, though. The best way to make a website is to give yourself a solid day to play around with the software and fine tune your site. It can take much longer than this to make a website site though – it depends on how many pages you have and how much customization you need to do.
If you don't have a design already in place and think templates are too limited, consider Adobe Muse CC. This unique little program concentrates on letting you design. Templates are handy, embeddable web fonts are great, and the sitemap view may be the best way to get an overall feel for what your site will have. Export it to HTML and you're ready for upload. It's part of the Creative Cloud bundle and also available individually for $14.99 a month with a yearly plan.
After you choose a website builder and a theme, take some time to learn how to use and customize these tools. Once you feel comfortable, start making changes. Some easy changes to start with are to add your name, logo, and contact details. Then, change the text font and color, add image galleries, background pictures, banners, and other site enhancements.