How To Season A Cast Iron Pan

I have a cast iron pan and love it. It's time to re-season it so I looked for help - my husband did it the first time but I want to re-scrub properly and reason it myself.

For those of you who don't own one, they are worth the investment. If you don't have the extra cash right now, remember to add it to a Christmas list when the family is begging you for what would you like for Christmas?