my basics and concepts in physics are relatively the best among my classmates but i have not done expected amount of problems that require IPhO. i am from india and first level NSEP is on 25 november 2012 so i have about 100 days for problem practice. I have collected the following books - 1.sears and zymnasky university physics, 2.resnick halliday FOP, 3.serway jewet Physics for scientist and engineers ,4.jacson's classic electrodynamics, 5.Feynman lectures on physics, 6.I E Irodov problems in general physics, 7.S S Krotov problem in physics and following question sets of olympiad - 1.asian physics olympiad, 2.international physics olympiad, 3.indian national physics olympiad , 4.canadian POPTOR series and national olympiads of britain, USA, canada and australia. but till today i have done only textbook excercise and H C Verma concepts of Physics. Please suggest which book and question sets are of same difficulty level as NSEP in india so i solve those before NSEP and the rest after that.Thanks in advace. Congratulations to all Gold Medalist of IPhO 2012.