Drupal 8 has come a long way since Drupal 7 to being easier to use out of the box. When I built sites for people using Drupal 7 the biggest complaint was the lack of a WYSIWYG editor. At some point installing WYSIWYG module and adding an editor role just became part of my usual installation of modules. This process wasn't complicated, but it was rather annoying.
First you had to install the module, then download the third party WYSIWYG files from another website. Once you had all the components you needed, you then had to setup text formats to use the editing interface, and also configure the role for your content managers to assign correct permissions. My favorite part of the process was the web page of check boxes of buttons you could add to the toolbar. The page was hideous and not very configurable if you'd added any extra add-ons to your WYSIWYG.