Weed does not "go bad" unless it is too damp and gets moldy. If you ever have moldy weed -DO NOT SMOKE IT! Moldy weed SMELLS moldy- trust your nose! Cannabis has many scents, but mold is not one of them! Dry cannabis has a fairly long shelf life (months) if kept cool, dry and out of the light. For very long storage, put it in a glass jar and freeze it.
Grinding- several ways. If you like very finely flaked weed, get that big wire mesh strainer from the kitchen and rub the pot through to a waiting plate. This works best with very dry grass (also good if you find seeds in your weed- keep the seeds! You WILL want to grow someday
). There are grinders of many descriptions- skip the plastic ones. And, of course, you have fingers!
I would suggest getting a small pipe. There will be a time when you
will run out of papers or wraps and need a toke! You can
always find a light for your pipe! A small glass "one hitter " will only put you back a few bucks. I've made most of my pipes.
Eventually you may wish to get a vaporizer. I'd suggest a Vapor Brothers as a reasonable 1st vaporizer. Vaping cuts down on coughing.
OK that's about it. If you ever want an education on MMJ- just click my link below. Enjoy! - Granny