Assalamu-alikum,
Some really good advices here, Alhamdulillah.
Few pointers from myself:
- I dont think the importance of making
summaries can be stressed enough.
--> and this becomes even more relevant during varsity years, where the one of the biggest factors is getting through the volume of notes.
I know of people who are able to study straight out of a text-book (wish I was one of those imsad)......but realistically - its a much easier task to revise through 50 pages than 500 pages, as illustrated above.
Importantly: summarising needs to begin early.....its just not possible to do this, a few days/ weeks before the exam, and still have time to study it.
Secondly:
Repetition.
Our mind only holds that which it considers beneficial/ of importance.
So, if something hasnt been read/ revised in a while......it is very soon forgotten.
You may be able to remember the topic generally, but the details are lost very very easily.
Often, students look at their teachers/ lecturers and wonder: How does he manage to remember all of this?
--> Well, consider how many times he revises his knowledge - in the form of teaching others.
Which brings me to the third point:
Teach others!
And you will be learning as well!......How cool is that?

The more you speak about something, and explain it in your own words - the more likely it is, for that piece of information to be remembered.
- Work through past papers.
Often, questions/ topics are repeated (dont we love when this happens ;D ).
It also gives you the chance to see where your weaknesses lie, and practise to answer the given paper within the time allocated.
- Work with friends.
--> This does not always work well.
It depends on your own personality, your style of studying and your friends.
Personally, im pretty much of a loner......so, I preferred to study myself.
However - it does indeed make a huge difference to discuss past papers, problem topics, etc. with others - at least a few weeks before the exams (when everyone has already done a reasonable amount of work themselves).
And finally:
Make DUAA.
At the end of the day - everything lies in the qoedrat of Allah (subhana wata'ala).
We need to put the effort......but also realise that nothing is achieved without the mercy of Allah upon us.
SubhanAllah.
All the best!.....And dont stress!
May Allah guide those striving to seek beneficial knowledge, for His pleasure, and make this road easy for them. Ameen.
Salaam