Hello, I am a low level university student, and ever since my Electromagnetism class where we derived the wave equations and my professor gave us a brief sample on what implications they had on the way things are in the world, I've been trying to get a true understanding of the topic of relativity. I have picked up "Brief History of Time" and it was great, it showed the effects of everything but did not do such a good job in my opinion in explaining why. Now I know this might be a case of my brain needing that one special example to get it to click or it might need a complicated derivation of some kind. What I would like help on is finding a book that can give me an understanding of the topic, not just be able to predict its effects. edit: i have done some looking on the internet, but I find that I cannot read extensive things off a computer screen, however printing something out to read would be a possibility.