I need to know what guys are like ?? help!!?

ok so like i wnat to know everything about guys i mean like what do they like girls to talk about cuz somethimes i dont know what to say..and do they dig blondes more or brunnetes? im a brunnette and ok i have a nice body but i dont have a lot of im actually kind of flat so do they care? and also i want to know like do guys ONLY want to get in your pants and do the sweet talk just to get you on their bed? or are they actually looking for a relationship an also im not that old im younger than 18 so please answer me and if you have any other helpful things or advice tell me too thanxx :)