Learning something is pretty difficult in security. It has a steep learning curve for sure. There are a lot of resources online - but just not enough. (Even moreso if you compare it to the amount of computer science resources there are, I feel like we just lack a variety) After some point, the attacks get sophisticated, but you can't really learn from anything, you'll have to research vulnerabilities by yourself. My friend's also expressed a concern about how he felt so standalone in the field whenever he tried to learn something new.
Of course, we could attend conferences, but it would be better if documentation was just available online.
That's why you need to write documentation. Whether that be a short, easy way to do things, or a really complicated method, writing it down will help someone else. Writing it down will help yourself. You'll get to remember more, understand more, and share your knowledge along the way.
I hope to write some docs over the next few months too.
Share your knowledge. Sharing is caring.