Try to Score 90 Plus questions in general English. 70 plus questions in general studies. But your ultimate aim should be get 180 plus question correctly (Recent Group IV Trend. But the scoring of 180 plus is depend upon the standard of question).
Complete school Text book first. After completing school books you may refer for additional reference but don’t depend coaching material. You can use coaching material for revision only.
Some people may advise you should study 10 hours a day but you don’t bother about it. The study time varies person to person some person study only 4 -5 hour per day , another may study 7- 8 hour per day but the time of study is not important effective study only decides our success.
Approach your preparation based on the prescribed syllabus and previous year question paper. If possible paste the syllabus in front of your study place
Many people collect various institute materials but they never use. So collect selective notes.
Give more importance to the subject in the following order, 1. General Tamil/ English/ 2. Aptitude 3. Current Affairs 4. Polity 5. Basic Gk. 6 Modern India. All Subjects are important but above mentioned subjects covers more than 150 questions.
Other than School book you should read Arihant or Lucent General Knowledge book to score 15 question. Because many people just read school book they are not sound in Fundamental knowledge. This portion decide your top rank.
How we studied? what we studied it doesn’t ensure success. In Last 3 hour Examination time only decide our success. To avoid silly mistake take mock test in your place using shakthi or Sura Question Bank