I'll answer #4:
My advice is to get good keybindings going. there's so damn many buttons you need to be able to use in a split second.
Openers:
Garrote
Cheapshot
Sap
For Damage:
S&D
SS(or Hemo, or Mutilate)
Blade Fury (if Spec'd)
Adrenaline Rush (if Spec'd)
Trinket
Rupture
Envenom (rarely used)
Eviscerate
Expose Armor
Prep (if spec'd)
Premed (if Spec'd)
For Runners:
Deadly Throw
Shadowstep (if spec'd)
Sprint
Distract
Shiv
For Defense:
Trinket
Sprint (dupe)
CloS
Racial (WoTF, etc)
Evasion
Blind
Kidney Shot (multi-use)
Kick
Stealth
Vanish
I'll use almost all of these every match, many of them more than once. Mutilate/SS/Hemo should be the easiest button to hit, along with your PvP trinket, Vanish, CloS, and Shiv. If you can't hit the Shiv button while chasing someone, you might as well not bind it. Kidney shot and kick are crucial too. In stealth, cs/sap should be easily spammable.
You don't have many of these abilities yet, but practice getting good rogue keybindings now.
Edit: forgot stealth and vanish.
Edited, Nov 14th 2007 1:51pm by Tromo