Mr(s) dansdealsfan,
No offense (actually, maybe a little), but you are asking questions (not the first time), that have been discussed over and over (and over) again, and want once again a private custom made explanation to you, is a bit in insult to peoples intelligence and time...
Read through whatever interests you, there will be a maximum of 7 pages, and if something isn't clear, feel free to ask; but not to expect people to give you a resume of a topic, unless you had a price in mind that you wish to pay the hour (note: not the teacher that has to feel to what extent dansdealsfan is deperate and than charge $250 the hour or so)
PS: I didn't mean it personal, but if it helps, pretend I did.
PPS: I seem a bit aggressive lately, but that comes from the stress, nothing to worry about (its enough that I do...)