first you have to degrease the screen with a printing degreaser- or baking soda and water. the abrasiveness will help hold the emulsion to the screen- which is really important if you're going to store it for a while.
then tape the screen- you can use printing tape, but i use masking tape because it's cheaper and easier to use (make sure you take it off once you are done printing, then retape before another print!). tape so no emulsion or ink can get in between the screen and the frame. tape both sides of the screen- it should take up no more than inch on each side.
theeeeen... carefully coat the screen- make sure you dont get any fish eye drip marks...those are bad. BAD!
after you are done printing, make sure you really clean the ink off- there will be some residue, but that's ok. like i said, remove the tape.
store it somewhere cool and away from sunlight- prop it up against a wall- maybe cover it with a cloth so it doesn't get poked by something sharp.
and you should be good!