Heey.

• The five sections of the exam are Numerical Ability & Scientific Aptitude, General Knowledge & Current Affair, Reasoning & Logical Deduction, English Language and Aptitude for Service Sector. Lay equal emphasis on each of the Section.
• To improve your GK and Current affairs, read newspaper evweyday. This can be started a a few months before the exam. This would also help you to build up your vocabulary for the english Section.  
• For numerical ability and scientific aptitude, study basic concepts from NCERT Class 10 books. Revise the basic concepts for subjects - Maths, English, and Science.
• You can use the Arihant Manual for the Reasoning and logical Section.
• Set a deadline to solve a number of questions. Try to solve questions within the set time frame. You would Require practice in order to attempt the paper efficiently.
• Practice the mock tests and the previous year question papers to have a fair idea about the level and way of attempt.

Best of luck!