By reading other people's blogs, you can find a lot of new things. Two months ago, I saw an article about "brain map" and downloaded a freemind, this is an open-source brain graph editing tool. After a period of use, I feel like a graphical notebook. Because the tree structure can be used to display the links between notes, it is helpful to sort out the ideas. Although the freemind interface is relatively simple, it is enough to complete the task. It can be seen that it has been a lot of work in simplified use, and most of the operations can be completed using the keyboard.
I usually use it less frequently. It is generally used to record issues that need attention during development, write a simple outline at the top of a long blog post, and analyze the list of confusing concepts, good results. For example, the following is the Oracle tablespace concept compiled by freemind.