Hi Martin,
Check out Scott Freiman's Native Instruments Komplete tutorial:
[url]http://www.macprovideo.com/tutorial/nativeinstruments102[/url]
There's a big section on Reaktor.
Also, if you check out the NI forums here at macprovideo, you can suggest topics for Scott to cover in his upcoming NI TNT series in this thread:
[url]http://www.macprovideo.com/forum/audio/native-instruments&id=25927[/url]
I'd seriously consider getting an iPhone - you can then watch your tutorials on the go and there are many amazing apps for music creation available ;-)
Rounik