Hi Karthik,
Its a good decision that you are planning to go for UPSC 2017. As you said you can devote 1 year for preparation then you can follow these points to start your preparation. All these tips are based on the success you can get in UPSC in 2017 Civil Services Exams.
1. Solve papers to check where you stand.
2. Make newspaper reading a habit. (Reading The Hindu/ The Indian Express is advised).
3. Follow your NCERT Books. (Priority: History, Geography, Economy and Polity related NCERT texts).
4. Try to Attempt UPSC Online mock test available on various website for free.