Not really, everything I have in here was from that guide. So I don't see how this guide is more advanced. >_>
My cake once dropped its iDevice in the water... It had to preserve the iDevice in rice (????) and later send it to a specialist that dealt with, um, wet iDevices. It's fixed now. =D Just don't try to turn on the iDevice, it'll permanently screw up.
Possibly. Hope that warranty's still around. =) You could hope, and start preserving it with rice now though.