Due to the rapid development of the industry, there are something you need to learn almost every year. Novices usually prefer learning through videos. As they gain more experience, they begin delving into the source code of other projects and reading some office doc, which is the phase I am currently in. But I still like to watch the instructional video when learning new techs, I also read office doc though. I have heard from some more experienced individuals that they only rely on office doc, but I somewhat skeptical. Will you watch those 'beginner instructional videos' when learning new? Or office doc is just enough.
Additionally, I've noticed that some users with high reputations on stackoverflow only answer questions and never asked questions. I wonder if these high-rank players no longer need help or are capable of solving all problems on their own?