There are plenty of excellent tutorials available to help you with this so here is where you will find links to the best resources on the web.
It takes a little while to master WordPress, but if you do start on this you will find that knowing some basic html and css will help you over a lot of hurdles when it comes to getting your website to look how you want.
Here is the first link - this covers all the basics and quite a few good advanced tips too!
https://www.wpbeginner.com/beginners-guide/how-to-learn-wordpress-for-free-in-a-week-or-less/
This link will take you udemy - there are many resources there, but these are all free..
https://www.udemy.com/topic/wordpress/free/