In fact, you don’t need a separate PostgreSQL manual project, you can use any common SQL, including the SQLite in the course. For work with SQL. Working with Postgres will be a little different from this one. If your task is not database administration.
On the question of Web Scraping you can see the articles that I have published me and @otavios.s
If you have any questions related to Postgres or Web Scrape, you can contact me.