The WordPress portion of your website manages all basic content pages. This includes the homepage, FAQ, About, Blog, Contact, Terms & Conditions, Privacy Policy, and any other content pages you have added.
There are many tutorials online that can show you how to use WordPress. You’ll mainly be editing pages and blog posts.
Edit Pages:
https://en.support.wordpress.com/pages/edit-pages-screen/
Add Users:
https://codex.wordpress.org/Users_Add_New_Screen