International Physics Olympiad (Preparation)? Hey I'm a Danish student, who will start 11th grade after summer. I intend to get to the International Physics Olympiad 2014. I'm familiar with almost the whole syllabus, but I'm not strong in calculus yet (I know basics of differential equations and integration). Furthermore, I try to do "Irodov's Problems in General Physics" to enhance my problem solving skills. On top of that I study "An Introduction to Physics" by Cutnell, and intend to start studying University Physics by Young and Freedman. My dream is to become a recognized theoretical physicist. The problem with University Physics is I'm doing it for self-study. Should I do ALL the problems, or just the odd-numbered (there are answers only to odd-numbered problems)? Any other advice in my preparation to IPhO? E.g. recommendation to problem-solving books that fits my level? Thanks.