-Completely unplug the computer
-Dont use water
-With the air, like said above, dont tilt it or turn it upside down. I did a couple of times by accident and was lucky to not crack any parts
lol.(because the canned air is liquid nitro and although dangerous, fun to bug ure friends with
-A small brush would be best for cleaning heat sinks. Ever seen the little tiny brushes people use on thier braces? well those seem to work quite well for the job at hand.
-Also try to keep ure computer standing up, gets the dust out and it doesnt just fly around in the case.
try to do a good job and dont take just like 5 minutes to clean it up, it pays off in the end. The thread you saw with the spring cleaning was mine and as i stated my Temp went from Idle 60 C to 35 C Idle. Which i thought was awsome