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About studying habits
Do you have any studying style/technique that doesn't require too much pretentious preparation?
I don't really trust ytubers that enforces this "you must have this differently colored pens and papers" or "you must have this expensive gadget" like chile
It helps to know your learning style.
If you area visual learner (need to see something to have it stick) the coloured highlighters can help. You may want to look for pictures, examples, videos and diagrams to supplement learning.
If you remember best by listening then read your study notes aloud to yourself. Record them and play back while you...... reply