If you want to learn how to do something, need help in algebra or want to take up meditation, the list goes on and on - just YouTube it! There is almost no excuse for failing algebra if you have access to a computer or smart phone. You can literally plug in a problem and instructions on how to solve it will come up in the search results. It's like having a personal tutor
My son is a scientist, he has no background in carpentry, plumbing or lighting. Youtube is helping him fix up an older home he bought and is living in. He YouTubes everything! He is also having an ADU built on his property and I guarantee, YouTube will be his best friend during this process.
Several years ago, I took a college algebra class and Youtube got me through some tough homework. An instructor actually takes you through a similar problem with the same process. Math is all about the process. My YouTube account has many saved channels: art, music, sewing, tennis, yoga, mediation and inspiration. All of them are how to channels.
My 19 year old enjoys researching different topics and teaches himself about history, science, astronomy; any question that pops into his head that he is curious about. Sometimes, he brings up topics in conversation that blow my mind. I'll ask him, "David, where'd you learn that?" His reply, "YouTube."
I can't help but think what it was like when I was a kid in the 70's. All of my education came from going to school and my questions were answered with the Britannica Encyclopedia! My parents had a beautiful set in our family room. My next resource was the Public Library. Today, there's YouTube.