I currently have College Physics by Young/Geller. My friend (who is superb at physics) told me that that book is not good and University Physics by Young/Freedman is a better choice. I would really like to know what is the difference between these 2 books? Should I invest in the Uni Physics book, considering that I already have the other? The context is that I really hope to make it into the national team for Physics Olympiad, or at least get a gold/silver in the National O. I'm currently 10th grade (not in US), and have maybe 1.3 years more to study for the exam (if i can make it to nats in the first place.) If anyone has any tips for me to study for it, it will be even greatly appreciated:D (Oh and I also happen to have ebook of Fundamentals of Physics by Halliday/Resnick. I know it's good, but I dislike reading ebooks) Thank a ton!