My parents are now rich in that their home is worth a ton of money, the area i live in has taken off, the property value, so that is a problem. I would never bring up much about the area you live in, and if anyone asks tell them basically nothing other than the general are you live. You can also give them a broader region, like don't mention the neighborhood just the city. I doubt anyone would care about your brother so that is not nearly as big an issue as wealth.
The problem is that most people are struggling and working long hours to get by and eat canned food and not have good medical or dental care or live in run down surroundings, so when they hear someone has this or that they think "royalty" and will get jealous which is complete nonsense.
It is an issue, but all you can do is be responsible in any program or job and say absolutely NOTHING about your living situation. If you are responsible and don't step on people's toes, there is virtually nothing they can say about you.
I wish to hell that I was self-made. I worked extremely hard on my business the last 6-7 years but I still got help from old money. If you are self-made, I think you have a certain glow about you and are humble and who built an empire from nothing... my point is, if you are not fully self-made, you can't REALLY have an identity and confidence in a way that someone who scratched and clawed and built from scratch has. That is why they say, "nothing in life is free" if you are given a big head start, it isn't REALLY a head start because you didn't learn the ropes the correct way. You can't cheat your way to becoming a man or woman and being a success. If you inherit money, you will have gaps in your confidence and self-worth and feel like less of a real person.