+1 on the seasoning tips.
You may want to skip any soaps. If soap soaks into the raw cast iron, and you season on top of the trapped soap, you will taste the soap until you strip it, clean it with hot water several times, and re-season. For bad soiling, heat the skillet until medium hot, and douse it with tap water while scrubbing. Use caution here, too hot a pan and water that is too cold will crack the skillet. Medium hot pan, and tepid tap water. The steaming action lifts out impurities really well, and will remove any old seasoning so you will be left with an even surface to season without little ridges from new seasoning on top of old.
When I'm done cooking, I run it over to the sink and immediately rinse out with plain water, dry it off, and coat with oil like a gun; just a give it enough oil to leave a sheen. I never use soap with cast iron. Just hot water.
Once it's seasoned well (heck season it as many times as you can), it will be a better non-stick surface than anything chemically made. My eggs slide right out.
Have fun and happy cooking!