There is no shortcut to success in this world,you may gets a blinder once but it will never happen again and again.
IF you really want to be good in study there is nothing better then to have a continues study,technique for study may be different but you never have a shortcut.
I have seen almost all the board patterns of India and Pakistan and we both have a thing that we never in courage continues study from the grass root level,our pattern is such that a person with good mind can get A+ grade by just studying for a week or so which is simply poor.
A best technique is to study from day one make a list of all the topic of your subjects and then start working on each topic,as soon as you came to know that you have finish a topic,just mark your topic as done.It will make your work easy and such conceptual study will never put you down.