The most important thing is the realization that quilting does not have to be a "perfect" activity. I was so scared when I started, fearing I would make a mistake, that almost nothing got done. Start with baby quilts... they are small and if you make a "terrible" mistake it will be small
. There are always places that will take baby quilts. Start small, your needs will become apparent, but mat and rotary cutter and 6x24" rule (with a plastic hand saver you can put on it) are basic, along with long bladed scissors and short sharp bladed snippers. Happy trails!!!! Dive in!
Oh, and if you can afford it, a sewing machine! Preferably with a big throat so you can quilt your own.