Hello elizabeththomas,
There are 4 ways in which you can achieve this:-
1. Learn the languages such as HTML, CSS, JavaScript, PHP and other things with the help of which you can create your website yourself. This requires a lot of time.
2. Use Third-party applications which will do most of the work for you. Software such as Dreamweaver and other WYSIWYG kind of software will help you to drag and drop and create your website.
3. Using CMS such as Joomla, WordPress, Drupral etc. where it is much easier than third-party applications.
4. Hire a website development agency which will do the work for you while you just relax. Websites such as http://www.joomdev.com provide great and fast services for website development.
I hope it helps :) !