这种表达有很多问题。
可以参考以下的书信表达。
Dear Sir,/Dear Madam,
I'm a student and want to get ready for the coming English test next month.I wonder if you can do me a favor and find some reference books for me.Thank you very much.
I'm looking forward to your letter.
Best regard.
***
I'm a student preparing for an English exam helding next month and I'm writing to you for some advices of relevent reference books.
随便一提,字真好看。