If it's worth saying, but not worth its own post, even in Discussion, it goes here.
I'd be happy to assist, if you like. By the way, for a gentle introduction to general relativity for undergrads, I recommend Hartle.
I read my way through Schutz with relative (!) ease. Do you know how they compare?
Anyway right now I'm studying the math. Wandering through Spivak.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.