YouTube for learning is better than any university. Lectures do not count, and from each you learn a lot of interesting things. Here is, for example, a paragraph from the lectures held last week:

"Recently, the Palestinian ambassador to the Czech Republic seemed to have exploded. He found an old safe in the consulate or in the embassy and decided to see what was there. And the safe is made so that if the safe stops understanding whether it is broken or not, it explodes. For the safe, it’s right: you explode and destroy documents. Documents are secrets, and the ambassadors are their hell. In a large amount. Now they have a new ambassador."

If so, the lecture was devoted to the mechanism of exceptions in Java.
c) Realcorwin