use a blower to blow dusts before brushing the lens with a very soft brush...
use liquid cleaners made for lenses...
be careful with the kind of cloth you are using to wipe off dirt on your lenses
you can put protective filters on the lenses which are not in use...
keep you gear in dry and safe places
do not try to clean the camera sensor unless you know how to...
don't play with the camera(others show off their camera by shooting continuously just to show the number of frames it can shoot per second
)
keep the strap attached (baka mahulog eh, and hawakan mo ng mahigpit, lalo na uso agawan ng camera sa Manila)
Love your camera... it will make your life meaningful and colorful