The WordPress admin interface can be confusing at first. Like learning any new application, it takes time to navigate all the options, learn the terminology, etc. I provide extensive tutoring to all my clients on how to use their new site. About one third of my work is in tutorials.
The benefit of learning the WordPress interface is total freedom to make any new web page you want, place it anywhere on your navigation menu, and sort lots of content by keyword, category or search. Your website can be up to date, all the time, with very little effort.