Writing down the important points you read in a notebook helps you retain the information for a longer period of time as compared to only reading and highlighting the important points. Read important points aloud and write them down after.
Practicing by writing is really a helpful technique to learn things faster. Practice by writing as much as you can.
Remember our childhood days, the teacher and our parents ask us to write spellings or answers 5 to 10 times so that we can learn faster. And we do write things that time so why not now? Writing was really a good technique to learn things and we still remember whatever we have learned.
Write down formulae or important points 4-5 times so that you can learn it easily and retain it forever.