A trip to the local farm store yields a box of cast iron cookware. Here's how to season cast iron. Note, after watching this video, watch the newer one I made here about how to season cast iron, thx!
Seasoning cast iron is not rocket science, just watch our how to season cast iron video here and you'll get the Eric way to season cast iron. One note: I now suggest using flax oil to season cast iron, its much better than vegetable shortening for the job. You can find flax seed oil in the refrigerated section of health food stores and places like Whole Foods.
For heavily rusted cast iron, aka how to clean rusty cast iron, watch this GF TV video on removing rust from cast iron.
Next you'll want to know how to clean your cast iron. The basic rule is to avoid soap. If the cast iron is seasoned properly, just about everything will clean off with hot water and a clean sponge. i have a dish sponge just for cast iron, i took a sharpie and wrote ' cast iron' on the sponge to get the point across to everyone about that.
You'll be surprised at how easily stuff cleans off a seasoned cast iron pan. I do avoid cooking scrambled eggs in cast iron, for that I use a non-stick pan, works much better.