What is the best way to install multiple shields on model 2560?
Carefully with the power disconnected. (serious)
Have a good look as some shields may touch each other, I have a ethernetshield that has a metalic case for the RJ45 and some shield have too much solder at their bottom which causes trouble.
For the rest (almost all) shields can be stacked in any order from hardware point of view. BUt be aware of the pins used by the shields,
See - http://shieldlist.org - for a good overview of many shields.
drushton:
What is the best way to install multiple shields on model 2560?
Best? That's subjective. What are the tradeoffs you are trying to consider between?