Dear if you are preparing for any government exam then you have to practise it very hardly because it is not an easy to crack any government exam u need concentration and time for your study. Take a book of the best author and try to practise from those books after practising through them try a test series and go by each and every test and evaluate your tests at regular intervel..You should remmbers the basics points as formulas for different questions in the apptitude section...and in English section you have to learn use of proper vocabulary in the question..