Read Building a personal knowledge base by Kirill Maltsev (kirillmaltsev.net)

I try to unload all information that has any meaning to me from my brain to external storage because I don’t like to rely on my memory nor do I trust it. In this blog post, I’m going to describe my current approach of working with a personal knowledge base.

He’s got a solid listing of tools here, many I’ve either tried or am currently using myself. Looks like he hasn’t come across Roam yet which I like for it’s ability to change tags across many linked pages. I wish other tools had that one killer feature.