A few pages from Kip Thorne's book,
BLACK HOLES AND TIME WARPS: EINSTEIN'S OUTRAGEOUS LEGACY (1994)

Pages 143 to 150 are required. The rest is useful, perhaps even fun!

First pair of pages (link)
Second pair (link) page 143 on this link
Third pair (link)
Fourth pair (link)
Fifth pair (link)
Sixth pair (link) page 150 on this link
Seventh pair (link)
Eighth pair (link)
Ninth pair (link)
Tenth pair (link)
Eleventh pair (link)
Twelfth pair (link)