I treat it like it's a real firearm. Put it in the gun case when done with it.
Not good to sleep with one. In case your little brother/sister decides to start playing with it.
I clean my inner barrels every month. You're supposed to clean it after an amount of shots. And also your gearbox, you should use grease.
The battery gets discharged and stored in a cool place.
BB's out of the magazine, 0 should remin.
There's probably more, stuff too. Guys here can fill in the blanks.