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Dear sir/madam
I am writing to you this letter because i found out, i can try to get some financial benefits for my studying. For this moment am doing american studies and am really like it doing this. I would like to please you if its possible if u can send me some more information about benefits i can get and also what is needed to apply to get this benefits. I have one more question about the benefits I am trying to get. For how long you will be able to help me with finance help towards my studying and how much money it will be.? I am looking forward for your answer and am really interested about getting this bennefits because it will be lot easier for me to still doing American Studies and finish my course so my future will be better. Looking forward to get some more information about the benefits am gonna apply for.
Your Sincirely
XYZ

I'd like to put/ask one more...sounds more politely
I am doing American studies / I have been doing American studies for /since..it started somewhere in the past and leading up to present time
I'm looking forward to answer....
it will/would