The easiest way to rinse sand is to put it in a typical 5gal bucket (or any other deep container) but only in a thin layer. I prefer using a fish tank as it's easier to see when the water is clear. Get your garden hose and do a couple prelim rinses. Fill the bucket with water, stir it with your hand, then empty the water. After that, just put the end of the hose at the bottom of the container and let the water run. You don't want the hose to be too powerful or pointing straight up, as it will splash all your sand out. Just arrange it so the sand can't really settle on the bottom, then go inside and have a snack, masturbate, or take a nap. In about 15min or so, the water should be crystal clear and the sand should be ready for your tank.