1) What was the first login screen you saw after you installed LoL?
probably Kog'maw or Xin Zhao if they were doing the release login screens by then
2) What was the first champion you ever played (don't count tutorial).
Yii... or maybe Shen?
3) What was the first "new" champ that was introduced?
Xin Zhao
4) What was the first skin you bought?
first skin I got was Nightmare Cho'Gath from a free Alienware giveaway
first skin I bought was probably... Galio's blue and dark purple skin during his release sale