How am I suppose to learn with docs and instant updates ?

I am really struggling as beginner, I am trying to create few decent apps to create a portfolio before I apply for jobs but I am really frustrated. Am I the only one who feels like finding good documentation, especially for beginners, is nearly impossible? It seems like everything changes so fast without any notice, and I can't keep up. I spend hours each day trying and failing just to find out the next day that everything has changed again, and there's no updated information. I'm currently trying to add storage to my next app using app router, but I'm really struggling. The documentation is frustratingly confusing; I have to sift through so many pages just to figure out how to install the right package. How did people learn this stuff? How do you update your apps without proper documentation? I know I'm a beginner, so maybe I don't understand everything, but how are you supposed to learn when nothing is clear? I feel like 90 percent of documentations are just un understandable unless you are really experienced developer