It would help if you said more specifically what you were looking for tutorials about, and also what your pre-existing knowledge level is about those topics. https://www.youtube.com/@richarde.borcherds7998 (Fields medalist Richard Borcherds) has lots of great math videos, but they are generally at mid-undergraduate level or higher, sometimes graduate level, so not for everyone. 3blue1brown is also good, and more elementary.
Otherwise, if I want to find out about a specific topic, I search for that topic as needed. Like I needed to fix a washing machine so I found a video about that particular repair. It’s not something I would have watched for random entertainment or education.
It would help if you said more specifically what you were looking for tutorials about, and also what your pre-existing knowledge level is about those topics. https://www.youtube.com/@richarde.borcherds7998 (Fields medalist Richard Borcherds) has lots of great math videos, but they are generally at mid-undergraduate level or higher, sometimes graduate level, so not for everyone. 3blue1brown is also good, and more elementary.
Otherwise, if I want to find out about a specific topic, I search for that topic as needed. Like I needed to fix a washing machine so I found a video about that particular repair. It’s not something I would have watched for random entertainment or education.