Here a few Links to German Pages about ''Rechtschreibreform''
All of them in German <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />

Very great Site, with Trainer:

http://www.wuerzburg.de/rechtschreibreform/ortho_98.html

A private Homepage:

http://www.andreasthieme.de/rechtschreibreform.html

And Downloads form DPA:

http://www.dpa.de/info/rechtschr/rs_index.htm

If You want more to know about ''Rechtschreibreform'', try it
Sternenschweif