To prepare for the upcoming national and international physics olympiad in two months, it's recommended to utilize previous years' olympiad problems, which are often available online with solutions. For theoretical understanding, it's important to focus on specific areas of physics, as no single book comprehensively covers all topics. Suggestions for study materials include "Sears and Zemansky's University Physics with Modern Physics" and "The Feynman Lectures on Physics," the latter being praised for its comprehensive coverage, with an accessible online version available. While "University Physics" may be a good resource, its sufficiency depends on individual familiarity and understanding of the material.
