Then I would recommend reading through the threads. I'm sure every single one of your questions has been answered before. Now maybe not in one nice neat thread like you created here but it has pretty much all been covered.
Use the search function, here or google, and look up redsn0w, sn0wbreeze, iphone dev team, ih8sn0w, comex, musclenerd, or planetbeing. You'll get so much info you won't know what to do with it and probably come back and start another thread that's already been covered - but we'll cover that later.