Answer:
Dear [Brother/Sister],
I hope this letter finds you well. It's been a while since we last spoke and I wanted to catch up with you and hear about your life in America. I hope everything is going well for you and that you're enjoying your time there.
I am writing to you today because I have a few things that I would like to ask for. I know it's been a while since you've been back home, but I was wondering if you could do me a favor and help me out.
Firstly, I was wondering if you could send me some of the American snacks and candy that I can't get here. I miss the taste of [specific snacks and candy] and I would love to be able to enjoy them again.
Secondly, I've been thinking about visiting you in America for a while now. I would love to see you and experience the American culture for myself. If possible, could you help me with the process of getting a visa and finding a place to stay?
Lastly, I've been thinking about studying in America and I would love to get your advice on universities and programs that you think would be a good fit for me.
Thank you for taking the time to read my letter and for considering my requests. I look forward to hearing from you soon and catching up on everything that's been going on in your life.
Take care and all the best.
Sincerely,
[Your name]