Cheatsheets are a very helpful resource and you need to have a tool to keep, interlink, retrieve and organize them. A physical notebook is not the optimal choic

Cheatsheets are a very helpful resource and you need to have a tool to keep, interlink, retrieve and organize them. A physical notebook is not the optimal choice because of some limitations like fast retrieval of topics and almost impossible filtered searching etc. Organize your "new things" and resources to cheatsheets in a Zettelkasten like tool. You can use a simple text editor or there are applications and plug-ins available to get a Zettelkasten-like app. I personally use Passfindr (https://passfindr.com https://passfindr.com), a freemium Personal Information Manager with powerful and fast search capabilities. Learn what a Zettelkasten (https://en.wikipedia.org/wiki/Zettelkasten https://en.wikipedia.org/wiki/Zettelkasten) is, how it can help you and make yourself familiar with its concept.