Relativity: Call for questions and proofreaders

This summer will see our next Summer School, this time dealing with both the special and general theories of relativity. It will come in two versions: one will be devoid of algebra, just as the quantum mechanics series was, and the other will have the mathematical details included. I’m looking for two things from our readers to help out: the first is a list of questions you would like to see answered, and the second is a group of proofreaders ready and willing to read through this before it becomes posted for all. If you have questions you would like to see answered, please post them in the comments. If you would like to proofread, please e-mail me directly.