The bitcoin whitepaper is literally the 1st thing everyone should read in this space: http://bitcoin.org/bitcoin.pdf
Then there are millions of great essays and youtube vids to choose from, it's quite overwhelming. I suggest skipping most of it and picking up the book by Saifedean Ammous called "The Bitcoin Standard." It's by far the best thing to read in terms of understanding bitcoin's potential, past, present and future.
If you find yourself searching on Youtube, there are two things to specifically avoid: Videos where they talk about "Crypto" (as opposed to bitcoin) and videos where the guy on the image has his mouth open. You will always go wrong with those two types of video.
Hope that helps!