Where do you learn things from?

I've been curious as to where you go when you wanna learn something new? I'm in my mid 20s and I am learning about investing just now.
I do watch some videos and go through reddit comments and previous posts but it burns me out a lot as there's so much content all over the place.

Like today I had been researching on business ideas and gaps in the markets I could fullfil with my startup but ended up getting overstimulated. I try to control my use of AI and so after every search on something I wanna learn about, I put 'reddit' at the end of my search result but there's just soooo much to grasp 😭
What are your reliable sources?