Hi, I'm new to Physics Forums, but I'm glad to be here. I'm in 10th grade and I'm very interested in physics. Since I was in an early grade (5th) I would scour my text book and my library looking for anything related to physics. Unfortunately I didn't have enough math skill to understand the math behind the ideas; so, I just learned the abstract. None the less I was intrigued. Recently (the last two years), I have been interested in some of the more complicated ideas in physics, particularly string theory, M-theory, relativity, and quantum Mechanics. The physics program at my high school is terrible. Really, it's a complete joke. I want to understand the more complicated theories because that is where my interest lies, but I need a strong base first. I want a textbook that would provide me with a strong basic understanding of physics and the math behind the ideas so that I could easily move on to the harder stuff. And in case you were wondering, I'm very good at math. I take advanced classes and I'm at the top of my class. I just Haven't been able to take any quality physics courses. So the math part won't be a problem. This brings me to my original question. What textbook would you recommend, Preferably one under $100?