Hi @mikehassi96 and welcome to WordPress.
So I will recommend you to visit Learn WordPress. So on Learn WordPress, you will see on the top Start Using WordPress. It’s a course, and inside that you will see the three options for beginner to advanced. So you can start with the beginner course, and it’s very short, around four-hour course. And I hope after completing the Beginner WordPress User course, you will understand more than basic, and you will be able to use WordPress. And I’m recommending this because this is not about only WordPress. This is also about the website, content and lots of other things like SEO, security. So I strongly recommend you to start with Learn WordPress.
Here is the course link. https://learn.wordpress.org/learning-pathway/user/
And for practice you can use Playground. https://playground.wordpress.net/
Best of luck.
