For subjects that requiring more memorization, e.g. History, etc. I would try to memorize it and put down the key points on a paper. Repeats this a few times.
For subjects that requiring more analysis / understanding the logic behind, e.g. Maths, etc. , I would thoroughly go through and understand the logic. Then, I would practice it using different question or scenarios.
Hope this helps!
One method that worked for me is writing down exactly what I want to learn multiple times. Usually 3-5 times. After that, recite it from memory the best I can a few times and then take a break and come back to it to see how much of it I can retain. Taking breaks is important because if you are forcing yourself to read and study, you won't be as engaged. So try studying for 30-45 minute while taking 5-10 minute breaks when you feel like you are overwhelmed.
Benjamin recommends the following next steps: