There are no "secrets" or shortcuts to success in your studies.
All you need to succeed is the right mindset and the right techniques.
These are what you will learn here...
Anonymous Laureate
General Tips
Start revising as from Lower 6. Master all Lower 6 chapters in the summer holidays (Nov-Dec) before your Upper 6.
Make sure to complete as many past papers as possible.
Make your own revision notes in a separate notebook.
Know your weaknesses and common mistakes - make a note and go through them regularly.
Have a work-life balance: Physical activities, go out with your relatives to get a time out of your studies, hobbies.
Subject-SpecificTips
Food Studies
For the practical paper, regularly prepare dishes at home (e.g. every Sunday). Try to find some innovative ways to decorate/garnish your dishes. Focus on local ingredients.
Mathematics
Past papers!!
Chemistry
Make your own notes from reference books. This will help you master the more challenging chapters. Also, complete as many MCQs.
General Paper
Have a vocabulary notebook. Try to complete one essay per week. Keep abreast with the world's events (use BBC, The Guardian ...)
French
Read magazines to get facts for your essay themes.