Can anyone give me some basic tips or refer me to a useful link for starting out as rogue in PVP? I have an alt L90 rogue but got to max level purely through PVE and am a shame to the class when it comes to PVP. I've only done Tol Barad so far, but am close to useless. I leveled as Combat, have Assassination for OS. I am aware I have a large toolkit of abilities that seem as if they might be useful for PVP (they don't seem to figure much in standard PvE rotations) but don't know where to begin. Any advice for starting out?
For example, suppose you saw a frost mage alone and wanted to fight them 1 on 1, what tactics would you employ?