-200 info is getting scarce these days. The absolute best resource is a book called 'The Straight Word". It's a switchology based book, about the size and shape of a large phonebook. I would expect that it's long out of print, but if you're going to operate a B737-200, it's absolutely the best resource you will find.....if you can find one.
Meanwhile:
http://www.b737.org.uk/