I last taught Physics 617, General Theory of Relativity, in
1994 and had no web pages, but I have subsequently typed up my
lecture notes, which are available here in
single column portrait pages
two column landscape pages,
the former better for reading on the screen and the latter better for printing.
These are just fallible lecture notes, and are mostly not original. I would, however, be happy to received corrections if you find any mistakes (and I am sure there are many).