Re: Rule 2
Cleaning off any residue left by your liquid bath of choice is essential. So yes, sometimes the best thing to do when your electronic device gets a bath in one liquid, is to pull the battery and clean it with the purest water you can find. Melted ice from the freezer is pretty good in that respect (just filter out the peas and sweetcorn).
Then just dry with a cloth, place in a sealed bag with something to absorb the water (rice as mentioned or silica gel as used in packing) and put it somewhere warm for a day.
I've saved a laptop from orange juice (complete with pulp bits - this required gentle scrubbing with a soft tooth brush), another from a pint of beer, and a mobile from coca cola using just this technique.
I would hasten to add only the beer on the laptop was my fault. The orange was neither my fault, or my laptop. The mobile was mine, and 2 weeks old when my brother managed to spill an entire glass of cola on it.
once the power is removed, the main risk is the LCD panel. You don't want liquids getting inside that, so if you can remove it, do. If not, be very very careful.