His girlfriend is lvl 10. And he said he has XP in WoW therefore I suppose he can explain it to her. + I've answered his 4 questions.
http://wotlk.openwow.com/talent#fZzx...xbddIGddhzIbRx those would be lvling talents. Start in Sub spec get to Hemorrhage then go for Blade Flurry in Combat tree after that u finish Sub spec.
U kill mobs with ambush and sinister strike and burn combo points with Eviscerate. Once u get hemorrhage u use that instead of Sinister Strike. And when ya get blade flurry u can pull 3-4 mobs w/o a prob.
Get plenty of food with ya and loot every HP pot that u can and lvling rogue won't be painful. Lvling rogue is actually one of the easiest things for me. Just don't forget to loot the best possible HP potions.