There are literally thousands of tutorials online about using and managing WordPress.  Some are obviously better than others.  Here are a few I have found useful over the years.

Easy WP Guide
This is a website that provides a very detailed, but easy to use, guide to using WordPress.  It does require an account and you get an email now and then, but mostly only when there has been an update to WordPress.  I have many users who have found the guides very useful. Support
This is info directly from WordPress.  Always good to learn directly from the source.

If you’re more visual, try some of these.  This is simply a search on YouTube, so your mileage may vary.

Posted in: About WordPress and Help