Which MySQL course (view/online book) would the green experts recommend?

Question

MySQL

Hello. Throw an accessible and complete course on MySQL, you have the basics in your head, you need to fill in all the gaps to a satisfactory level.
PS I know what you can google, etc., but I'm lost in what is good and what is not very good for a beginner in this field. Please correct.
Thanks in advance.

Answer 1

sql-ex.ru/?Lang=0
+ 2 books: SQL. Collection of recipes; MySQL recipe book

Answer 2

https://www.youtube.com/watch?v=39e1vAGD3hg
https://www.youtube.com/watch?v=-7sCE6ob70U
etc.

Answer 3

https://www.codecademy.com/learn - You might find something useful.

Answer 4

I recommend this book: MySQL Lessons (+CD-ROM) , I bought a paper version, the reviews are good, only 125 rubles.
Without the "water", step by step, the best MySQL tutorial I've read.