How to develop a newbie in WordPress?

Question

IT education

I would like to know what resources are best for a beginner to use in order to comprehend WordPress. (These can be books, websites, videos, etc.)
I would like to start freelancing orders specifically for WordPress, but so far I am practically 0 PS :
I know that there is a lot of information on the internet, but I don’t know anything, I’m afraid to stumble on unnecessary things and waste my time

Answer 1

The most important sources are
https://developer.wordpress.org/
https://codex.wordpress.org/
https://wp-kama.ru/
And then install the VI, themes, plugins. Try creating a theme or plugin yourself.

Answer 2

I will add to what was written above https://misha.blog/wordpress/php-for-wordpress.html