Have your turkey thawed out by the Monday leading to thanksgiving.
Remove from bag and drain well. Make sure to remove the neck, giblets and any chunks of ice that may be stuck inside.
Place the turkey breast side down in your brine bag, add about 2 gallons of your prepared brine to your bag and seal up well. You can place this into a large pot, clean bucket or even one of the drawers in your refrigerator.
For a turkey under 20#, brine for about 36 hours. Anything larger you can go up to 48 hours.
By Wednesday your turkey should be ready to come out of the brine. Remove it from the bag, rise it off gently and pat dry.
Make sure the legs are secured in the plastic holder that comes with your turkey, and I like to tuck the wings under the body. It just gives a better presentation and helps the turkey sit up better.
Place your turkey into a roasting pan on a roasting rack, put back into your refrigerator and allow to air dry until Thursday.