It would be good if you could tell which year you are in, what is your branch and what is your current preparation status because how proper Gate preparation should be done depends on these factors or generally below tips will be helpful for any Gate aspirant -

1. Know the syllabus very well.

2. Read standard books only as there are many books available in the market so it is advisable to use the books which make all your concepts clear and which are easy to understand.

3. Understand the weightage of topics properly.

4. Proper Revision plan should be followed.

5. Mock Tests and Practice Tests should be done as this will help you to learn time management skills and this will also make you familiar with the exam pattern along with difficulty level of questions.

Good Luck!!!