I think my parents did an excellent job teaching me about money and finances growing up, but there are two categories where I felt like I didn't have any frame of reference until I was well into my college career.
1) I had no idea what a reasonable adult job paid. Was $100,000 a year a lot? A little? Could you live a decent life on $15,000 a year? And what kinds of jobs paid good salaries? I mean, I assumed a doctor or a lawyer made pretty good money and a teacher made less, but I didn't know HOW much less or how much was "pretty good money."
2) How much did a house cost? I had no idea until a few years ago what either of the houses we lived in growing up cost or how they related, percentage wise, to my parents' income. I remember seeing signs for neighborhoods that said things like "Houses starting in the $250s" and thinking "well, that can't be two hundred and fifty dollars, but it certainly can't be two hundred and fifty THOUSAND could it?" I was just completely clueless.
What financial information do you wish someone had shared with you?