Taking good notes saves you time.
Until recently, I never distinguished different types of notes. I jotted down some quick bullet points and usually never looked at them again.
By learning the different types of notes and building a system, you'll create a knowledge base that will serve you over time.
1/ Fleeting Notes
Fleeting notes are the thoughts you capture throughout the day. These could be ideas or tasks. Discard after it processing into your system.
Have one place to capture Fleeting Notes, e.g., a notepad or simple app on your phone.
2/ Literature Notes
Use Literature notes to capture the ideas of others. These are notes you take from books, articles, videos, or podcasts.
Write one Literature Note per idea. Add some tags to help you find it again.
Write in your own words and with complete sentences. Include a reference to the source material. You do not need to go crazy. A summary of the author's idea with a link to the source is often all you need.
3/ Permanent Notes
Write one Permanent Note per idea. Permanent notes are your thoughts and opinions. Add some tags to help you find it again.
Tip: Write in complete sentences and include enough context that anyone, including your future self, can understand its meaning.
4/ Sequence/Relevant Notes
Sequence notes contain links to related Permanent Notes. As you arrange your Permanent Notes, you'll see the gaps and develop questions and ideas, which can be the basis for new Permanent Notes.
5/ Periodic Notes
Periodic notes are relative to a specific time: your Daily Log or Journal, for example.
6/ Project Notes
Project notes are for a specific project. When the project is complete, you can archive them with the project.