There are various instructions on note-taking; one is a book by Jean-Francois Rozan; Note-taking in Consecutive Interpreting. A simpler instruction is the Cornell method summarized below. It’s destribed in Walter Pauk’s book How to Study in College.
Rozan’s 7 principles
noting the idea, not the word
Rozan’s 20 symbols
symbols of expression
symbols of motion
symbols of correspondence
symbols for things
Cornell method by Walter Pauk
Divide the paper into two columns: the right-hand note-taking column is twice the size of the questions/keyword column, which is on the left, creating something like a FAQ layout. Leave out five to seven lines, or about 5 cm at the bottom of the page.
Notes from a text, recording or lecture are written in the note-taking column; they consist of the main ideas of and longer ideas are paraphrased, symbols or abbreviations are used as much as possible.
Relevant questions or keywords - which are recorded asap, are written in the left-hand keyword column.
When reviewing cover the note-taking (right) column while answering the questions/keywords in the keyword or cue (left) column. Reflect on the material and review the notes regularly.