Where can I find Bootstrap 5 tutorials?

Question

Bootstrap

Good afternoon. There are only 2 people on YouTube who have bootstrap courses. Approximately 10 lessons of 10 minutes, where nothing is explained, they just write the code without explaining why, from where and how, + they skip a ton of the necessary material. Are there any normal courses that completely chew the bootstrap from scratch to the result?

PS In advance I see comments like: "Read the documentation". In your native language, with examples, possibilities, subtleties and tricks of various features of the bootstrap, it is much easier to absorb the material. So documentation is not what I'm looking for.