Abhijit, for studying Engineering courses like BE/B.Tech you should have completed your 12th with Physics, Mathematics and Chemistry or any Vocational subject. If you are still in your 10th you should wait for 2 more years before you start preparing for B.Tech. Regarding the fee structure, it depends on the College that you want to study in. But again the Colleges update their fee structure every 2-3 years and what might be the fees today might not be the same by the time you join B.Tech.