I hope you didn't spend any more than $52 on it (I see eBay listings for them
that go as high as $98) since that's what it costs to buy one new from
the company that publishes them, helminc.com.  The genuine factory service
manuals are as good as they get; books from Haynes, Chilton, etc. don't even
come close.  You can also get Technical Service Bulletins specific to your
vehicle from helminc.com as well, plus they have a lot of more specialized
texts regarding just the emissions system, vacuum/electrical, A/C, etc.  I've
ordered shop manual sets for both my 1987 and 1991 Mustangs through them,
they were definitely worth the cost.  I also just recently bought a 1997
Saturn SL sedan set through them... it ended up having over 3000 (seriously)
pages of documents in it.  Compare that to the 150 or so page manual Haynes
had, and you can see why it's the preferred route.