Being a total newb at Fighting games and games in general

Sometimes when i play my 8 year old cousins and win i feel like im the shit ( yeah i really have a low life) but then my big brother comes in and whoops my ass.I think to my self “Damn I am really a scrub” i get to confident when playing only to be smacked by another good person.I really need help , i wonder how to improve my technique , my moves , i don’t really even know what all the Street Fighter language like c.klp or DP something like that.I barely even know how to do hadoukens , cancels , and all the basic stuff.I don’t know what playing style i like too.
Street Fighter IV and capcom hate me, cause i fail at life.

My Xbox 360 Gamertage is L33TiuM.