I have wasted my time and money for preparation of exams for Govt jobs. The I realised I could have passed any exam even while being at home. I found these tips very helpful to me. Hope these help you too:
Analyze the whole syllabus.
Analyze the Exam Level.
Make a daily study schedule that works for you and which is accordingly suitable for you.
Set Weekly goals and achieve and achieve them
Being positive and self-assured is must.
You must study from standard study material. Because there is nothing else to give you the correct information.
Keep an eye on previous year question papers.
Get plenty of rest and sleep.
Practice is the most important key.
I welcome your views too. Thank you.