"Wrong" is perhaps not the most accurate word. I most often found information to be either extremely oversimplified such as to be unhelpful, or outdated and no longer relevant for current systems. Although, yes, some things were just wrong.
There are courses and presentations and books, but there aren't many websites or articles — and that's the learning style that works best for me. Undergrad programs will teach a lot of what I covered (though certainly not all, and it really depends on the program) but I believe that knowledge should not be gatekept on going to college.
Ultimately, diving deeper with only websites and articles can be quite challenging. I experienced this myself trying to learn more about the continuation passing style transformation in a compiler. No online websites or articles discussed the topic with any kind of depth.
Ultimately I read the classic book "Compiling with Continuations", and it basically cleared up all my confusions.
All of this is to say, don't discount books and courses. They will almost always be more in depth and correct than what you will find written up on a website.
There are courses and presentations and books, but there aren't many websites or articles — and that's the learning style that works best for me. Undergrad programs will teach a lot of what I covered (though certainly not all, and it really depends on the program) but I believe that knowledge should not be gatekept on going to college.