Playing a champ for the first time

No I'm not talking about ranked but don't do that either. Even in a normal game don't play a champ without at least reading what the skills are. Watch the spotlight video or even just the champ's moves in the champion info screen. Do not be a Qiyana that says "Why does somebody that is supposed to be an assassin only have a knock back ult." I understand not knowing all of the ins and out of a champ but come on. I Just had this happen and I am now big mad.