Earlier this year, I concluded that I would be a bit more lax with my Geography notes in comparison to other subjects. Even though that might be the case, I still have my methods.
In Economics, I printed out the syllabus with all the details about what we'll cover during the year. What I do is just make dot point notes and mind maps under each of the headings.
For example, the first heading under 'Ecosystems and their management' in the syllabus says:
"biophysical interactions which lead to diverse ecosystems and their functioning"
For that dot point, I'd make a mindmap which lists the different biophysical interactions and then provide examples listing off each.
Try to have a consistent method of note taking & revision though. If everything is rather similar, it is easier to develop a skill as it simplifies the process.
Best of luck!