Realationship with your family. I have two brothers and one sister but my family stopped doing family stuff about 5 years ago so I live with them but we got to a stage where we don't even really know each other to a deep level anymore, we talk sometimes but it's usually about basketball or predictable and boring stuff. Often times he'll come into the living room and we won't say a word to each other for the whole day. and my other brother and sister I pretty much never talk to. So what I'm asking is how do you get to that deeper level with them when we haven't even had a serious talk pretty much ever?

Go do something with one of them. Pester one of them until that person does something with you. Don't take no for an answer. When you think of something to do, try to make it something that the other person might actually want to do. Try to take their interests into account.

Use your PUA skills on them. Do patterns, ask questions, and BE interested in their lives.