New to Mercedes

Hi, i'm greg, i just bought a 2001 E55 AMG. So far i love it but i have quite a few questions mainly because it didn't come with the owners manual. Before the e55 i had an e36 m3 which was awsome but once you reach 206k and average 3k a month it begins to drain your funds. Anyways i'm very impressed with the e55 especially in the straights and defiently will be keeping it for a while or at least replacing it with another AMG. But...

What do the "W" and the "S" next to the shifter mean?

What does "EC", the solid arrow that points to a filter and then follows but is hollow and the rest button all do?

On the steering column there is a lever with, i guess, a torch almost and then it is crossed out, this is on the right side opposite to the cruise control. What is it?

Do the service indicators affect how the car behaves and can they be reset without going to the dealership or could they even be turned off?

And finally both my displays on either side of the main display are broken. I can see that the right one displays what gear your in when using the tiptronic but what else is there?

Thanks! BTW it's silver, two tone interior (black and white), 85k and picked it up, after taxes and fees, 18.5k.