I want to learn Postgres

I am a big fun of the django and docker courses. Now I want to buy SQL course.
However, in my job I am using PostgreSQL (mostly Django ORM but I want to dive deeper into SQL). Can I apply my knowledge from the MySQL course to PostgreSQL? Or should I consider purchasing PostgreSQL course elsewhere?
I want to buy SQL course but I afraid the I will be not applicable to Postgres, can you clarify this please?

SQL is a standard so you can at least apply a big part of what you learned.
Now each DB has specifics so it remains meaningful to learn Postgres SQL.


PostgresSQL and MySQL are both relational database management systems. and both use SQL language to manage their queries. the syntax is very very close.