How to brine a turkey
Check out this recipe from Alton Brown: http://www.foodnetwork.... It's heavenly. You can also go to the "videos" tab on that page and SEE how to brine a turkey!
Use a brine that specified which Kosher Salt you should use.
The Diamond brand is the default for most brine recipes. While Morton will scoop out differently in weight of salt/cup.
William Sonoma sells a premade spice brine mix which I haven't tried but should be fairly foolproof.
The other thing you'd need is a clean icechest or one of those 5 gallon buckets with lids from the home depot. (use ice for the water element or set outside if it's cool enough in your region).
This one from campagnes looks lovely: