Your next assignment requires you to write a business-style letter to someone who wants to enter the field you have chosen. In any kind of document, there are two primary considerations: genre (type of document) and content (what's in the document).
In this case, you will determine the content. After all, you are the one who has been doing research into your field and what it requires from new members. You are the expert here.
The genre is a business letter, written in block format:
The readings for this section include a book chapter and a brief video. The chapter is densely written but has a tremendous amount of information in it. Please read it carefully and let me know if you have any questions about it.
